/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/Problem12_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:25:04,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:25:04,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:25:04,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:25:04,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:25:04,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:25:04,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:25:04,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:25:04,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:25:04,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:25:04,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:25:04,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:25:04,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:25:04,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:25:04,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:25:04,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:25:04,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:25:04,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:25:04,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:25:04,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:25:04,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:25:04,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:25:04,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:25:04,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:25:04,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:25:04,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:25:04,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:25:04,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:25:04,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:25:04,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:25:04,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:25:04,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:25:04,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:25:04,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:25:04,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:25:04,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:25:04,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:25:04,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:25:04,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:25:04,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:25:04,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:25:04,134 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 08:25:04,173 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:25:04,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:25:04,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:25:04,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:25:04,176 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:25:04,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:25:04,177 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:25:04,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:25:04,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:25:04,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:25:04,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:25:04,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:25:04,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:25:04,179 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:25:04,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:25:04,180 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:25:04,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:25:04,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:25:04,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:25:04,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:25:04,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:25:04,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:25:04,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:25:04,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:25:04,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:25:04,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:25:04,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:25:04,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:25:04,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:25:04,183 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 08:25:04,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:25:04,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:25:04,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:25:04,557 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:25:04,558 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:25:04,558 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46.c [2020-10-13 08:25:04,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/661ae7152/cc30dfabebc4407c93cba8ab764adff8/FLAG2f99e428c [2020-10-13 08:25:05,466 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:25:05,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label46.c [2020-10-13 08:25:05,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/661ae7152/cc30dfabebc4407c93cba8ab764adff8/FLAG2f99e428c [2020-10-13 08:25:05,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/661ae7152/cc30dfabebc4407c93cba8ab764adff8 [2020-10-13 08:25:05,966 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:25:05,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:25:05,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:25:05,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:25:05,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:25:05,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:25:05" (1/1) ... [2020-10-13 08:25:05,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ada6b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:05, skipping insertion in model container [2020-10-13 08:25:05,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:25:05" (1/1) ... [2020-10-13 08:25:05,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:25:06,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:25:07,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:25:07,652 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:25:08,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:25:08,370 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:25:08,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:08 WrapperNode [2020-10-13 08:25:08,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:25:08,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:25:08,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:25:08,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:25:08,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:08" (1/1) ... [2020-10-13 08:25:08,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:08" (1/1) ... [2020-10-13 08:25:08,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:08" (1/1) ... [2020-10-13 08:25:08,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:08" (1/1) ... [2020-10-13 08:25:08,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:08" (1/1) ... [2020-10-13 08:25:08,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:08" (1/1) ... [2020-10-13 08:25:08,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:08" (1/1) ... [2020-10-13 08:25:08,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:25:08,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:25:08,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:25:08,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:25:08,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:08" (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 08:25:08,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:25:08,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:25:08,750 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:25:08,750 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:25:08,751 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:25:08,751 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:25:08,751 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:25:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:25:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:25:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:25:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:25:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:25:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:25:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:25:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:25:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:25:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:25:14,411 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:25:14,414 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:25:14,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:25:14 BoogieIcfgContainer [2020-10-13 08:25:14,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:25:14,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:25:14,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:25:14,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:25:14,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:25:05" (1/3) ... [2020-10-13 08:25:14,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667e530f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:25:14, skipping insertion in model container [2020-10-13 08:25:14,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:25:08" (2/3) ... [2020-10-13 08:25:14,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667e530f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:25:14, skipping insertion in model container [2020-10-13 08:25:14,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:25:14" (3/3) ... [2020-10-13 08:25:14,438 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label46.c [2020-10-13 08:25:14,451 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:25:14,462 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:25:14,481 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:25:14,517 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:25:14,517 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:25:14,517 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:25:14,517 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:25:14,517 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:25:14,518 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:25:14,518 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:25:14,518 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:25:14,559 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:25:14,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 08:25:14,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:14,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:25:14,574 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:14,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:14,585 INFO L82 PathProgramCache]: Analyzing trace with hash 415024674, now seen corresponding path program 1 times [2020-10-13 08:25:14,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:14,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777442966] [2020-10-13 08:25:14,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:14,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:15,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:15,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:25:15,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:15,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-10-13 08:25:15,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:15,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:25:15,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:25:15,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:25:15,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:25:15,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:15,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:15,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:15,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:15,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:15,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 08:25:15,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:15,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:15,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:15,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:25:15,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:15,503 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 08:25:15,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777442966] [2020-10-13 08:25:15,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:25:15,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:25:15,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609617231] [2020-10-13 08:25:15,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:25:15,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:15,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:25:15,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:25:15,537 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:25:25,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:25,117 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-13 08:25:25,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:25:25,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-13 08:25:25,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:25,187 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:25:25,187 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:25:25,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:25:25,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:25:25,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:25:25,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:25:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-13 08:25:25,439 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 67 [2020-10-13 08:25:25,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:25,440 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-13 08:25:25,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:25:25,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-13 08:25:25,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 08:25:25,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:25,447 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:25:25,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:25:25,448 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:25,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:25,449 INFO L82 PathProgramCache]: Analyzing trace with hash 795068955, now seen corresponding path program 1 times [2020-10-13 08:25:25,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:25,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439902897] [2020-10-13 08:25:25,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:25,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:25,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:26,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:26,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:26,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 08:25:26,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:25:26,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1474 [2020-10-13 08:25:26,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:26,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:26,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:25:26,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:25:26,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:25:27,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:27,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:27,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:27,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:27,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:27,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:25:27,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:27,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:27,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:27,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:27,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:27,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:27,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:27,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:27,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:25:27,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:27,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:25:27,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:27,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:27,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:25:27,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:25:27,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439902897] [2020-10-13 08:25:27,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:27,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:25:27,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500619106] [2020-10-13 08:25:27,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:25:27,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:27,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:25:27,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:25:27,398 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-13 08:25:34,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:34,391 INFO L93 Difference]: Finished difference Result 3162 states and 5113 transitions. [2020-10-13 08:25:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:25:34,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-13 08:25:34,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:34,402 INFO L225 Difference]: With dead ends: 3162 [2020-10-13 08:25:34,403 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:25:34,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:25:34,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:25:34,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:25:34,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:25:34,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2333 transitions. [2020-10-13 08:25:34,453 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2333 transitions. Word has length 142 [2020-10-13 08:25:34,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:34,454 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2333 transitions. [2020-10-13 08:25:34,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:25:34,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2333 transitions. [2020-10-13 08:25:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-13 08:25:34,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:34,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 08:25:34,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:25:34,458 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:34,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:34,459 INFO L82 PathProgramCache]: Analyzing trace with hash -231533578, now seen corresponding path program 1 times [2020-10-13 08:25:34,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:34,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090747458] [2020-10-13 08:25:34,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:34,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:34,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:35,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:35,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 08:25:35,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:25:35,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1414 [2020-10-13 08:25:35,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:35,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:25:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:25:35,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:36,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:36,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:36,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:36,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:36,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:36,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:25:36,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:36,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:36,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:36,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:36,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:36,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:25:36,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:36,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 08:25:36,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:36,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:36,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:36,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:25:36,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:25:36,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090747458] [2020-10-13 08:25:36,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:36,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:25:36,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865183249] [2020-10-13 08:25:36,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:25:36,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:36,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:25:36,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:25:36,240 INFO L87 Difference]: Start difference. First operand 1553 states and 2333 transitions. Second operand 5 states. [2020-10-13 08:25:46,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:46,481 INFO L93 Difference]: Finished difference Result 4680 states and 7095 transitions. [2020-10-13 08:25:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:25:46,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-13 08:25:46,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:46,513 INFO L225 Difference]: With dead ends: 4680 [2020-10-13 08:25:46,513 INFO L226 Difference]: Without dead ends: 3133 [2020-10-13 08:25:46,519 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 08:25:46,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2020-10-13 08:25:46,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 3119. [2020-10-13 08:25:46,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3119 states. [2020-10-13 08:25:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 4470 transitions. [2020-10-13 08:25:46,667 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 4470 transitions. Word has length 143 [2020-10-13 08:25:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:46,668 INFO L479 AbstractCegarLoop]: Abstraction has 3119 states and 4470 transitions. [2020-10-13 08:25:46,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:25:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 4470 transitions. [2020-10-13 08:25:46,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-13 08:25:46,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:46,677 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 08:25:46,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:25:46,678 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:46,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:46,679 INFO L82 PathProgramCache]: Analyzing trace with hash -332716774, now seen corresponding path program 1 times [2020-10-13 08:25:46,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:46,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196818023] [2020-10-13 08:25:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:46,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:46,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:47,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:47,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:47,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 08:25:47,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:25:47,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 958 [2020-10-13 08:25:47,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:47,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:47,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 08:25:47,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:25:47,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:47,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:47,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:47,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:47,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:47,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:47,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:25:47,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:47,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:47,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:47,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:47,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:47,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:47,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:47,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:47,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:25:47,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:47,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 08:25:47,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:47,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:47,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:47,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:25:47,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:47,898 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:25:47,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196818023] [2020-10-13 08:25:47,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:47,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:25:47,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399243807] [2020-10-13 08:25:47,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:25:47,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:47,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:25:47,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:25:47,902 INFO L87 Difference]: Start difference. First operand 3119 states and 4470 transitions. Second operand 5 states. [2020-10-13 08:25:57,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:57,690 INFO L93 Difference]: Finished difference Result 7807 states and 11583 transitions. [2020-10-13 08:25:57,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:25:57,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-13 08:25:57,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:57,720 INFO L225 Difference]: With dead ends: 7807 [2020-10-13 08:25:57,720 INFO L226 Difference]: Without dead ends: 4694 [2020-10-13 08:25:57,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:25:57,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2020-10-13 08:25:57,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4686. [2020-10-13 08:25:57,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4686 states. [2020-10-13 08:25:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4686 states to 4686 states and 6423 transitions. [2020-10-13 08:25:57,852 INFO L78 Accepts]: Start accepts. Automaton has 4686 states and 6423 transitions. Word has length 145 [2020-10-13 08:25:57,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:57,853 INFO L479 AbstractCegarLoop]: Abstraction has 4686 states and 6423 transitions. [2020-10-13 08:25:57,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:25:57,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4686 states and 6423 transitions. [2020-10-13 08:25:57,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 08:25:57,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:57,856 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 08:25:57,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:25:57,856 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:57,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:57,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1934670051, now seen corresponding path program 1 times [2020-10-13 08:25:57,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:57,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010831087] [2020-10-13 08:25:57,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:57,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:58,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:58,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:58,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 08:25:58,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:25:58,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-10-13 08:25:58,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:58,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:58,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 08:25:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:25:58,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:58,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:58,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:58,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:58,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:58,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:58,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:25:58,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:58,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:58,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:58,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:58,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:58,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:25:58,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:58,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 08:25:58,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:58,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:58,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:58,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:25:58,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:25:58,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010831087] [2020-10-13 08:25:58,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:58,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:25:58,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252604866] [2020-10-13 08:25:58,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:25:58,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:58,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:25:58,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:25:58,985 INFO L87 Difference]: Start difference. First operand 4686 states and 6423 transitions. Second operand 5 states. [2020-10-13 08:26:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:10,133 INFO L93 Difference]: Finished difference Result 14039 states and 19668 transitions. [2020-10-13 08:26:10,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:10,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-13 08:26:10,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:10,194 INFO L225 Difference]: With dead ends: 14039 [2020-10-13 08:26:10,194 INFO L226 Difference]: Without dead ends: 9359 [2020-10-13 08:26:10,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:26:10,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9359 states. [2020-10-13 08:26:10,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9359 to 9347. [2020-10-13 08:26:10,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9347 states. [2020-10-13 08:26:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9347 states to 9347 states and 12230 transitions. [2020-10-13 08:26:10,502 INFO L78 Accepts]: Start accepts. Automaton has 9347 states and 12230 transitions. Word has length 146 [2020-10-13 08:26:10,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:10,502 INFO L479 AbstractCegarLoop]: Abstraction has 9347 states and 12230 transitions. [2020-10-13 08:26:10,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:10,503 INFO L276 IsEmpty]: Start isEmpty. Operand 9347 states and 12230 transitions. [2020-10-13 08:26:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 08:26:10,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:10,508 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:26:10,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:26:10,509 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:10,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:10,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1803324430, now seen corresponding path program 1 times [2020-10-13 08:26:10,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:10,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747556989] [2020-10-13 08:26:10,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:10,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:10,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:11,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:11,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:11,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:26:11,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:26:11,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1141 [2020-10-13 08:26:11,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:11,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:11,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 08:26:11,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:26:11,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:11,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:11,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:11,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:11,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:11,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:11,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:26:11,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:11,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:11,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:11,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:11,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:11,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:11,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:26:11,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:11,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 08:26:11,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:11,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:11,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:11,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 08:26:11,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:11,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747556989] [2020-10-13 08:26:11,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:11,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:11,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150766350] [2020-10-13 08:26:11,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:11,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:11,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:11,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:11,981 INFO L87 Difference]: Start difference. First operand 9347 states and 12230 transitions. Second operand 5 states. [2020-10-13 08:26:22,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:22,414 INFO L93 Difference]: Finished difference Result 27996 states and 37420 transitions. [2020-10-13 08:26:22,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:22,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-13 08:26:22,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:22,511 INFO L225 Difference]: With dead ends: 27996 [2020-10-13 08:26:22,512 INFO L226 Difference]: Without dead ends: 18655 [2020-10-13 08:26:22,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 08:26:22,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18655 states. [2020-10-13 08:26:22,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18655 to 18643. [2020-10-13 08:26:22,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18643 states. [2020-10-13 08:26:23,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18643 states to 18643 states and 22913 transitions. [2020-10-13 08:26:23,033 INFO L78 Accepts]: Start accepts. Automaton has 18643 states and 22913 transitions. Word has length 157 [2020-10-13 08:26:23,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:23,033 INFO L479 AbstractCegarLoop]: Abstraction has 18643 states and 22913 transitions. [2020-10-13 08:26:23,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:23,034 INFO L276 IsEmpty]: Start isEmpty. Operand 18643 states and 22913 transitions. [2020-10-13 08:26:23,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-13 08:26:23,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:23,040 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:26:23,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:26:23,041 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:23,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:23,041 INFO L82 PathProgramCache]: Analyzing trace with hash -806807529, now seen corresponding path program 1 times [2020-10-13 08:26:23,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:23,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078055515] [2020-10-13 08:26:23,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:23,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:23,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:24,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:24,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-13 08:26:24,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:26:24,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 968 [2020-10-13 08:26:24,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:24,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:24,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-13 08:26:24,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:26:24,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:24,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:24,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:24,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:24,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:24,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:24,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:26:24,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:24,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:24,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:24,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:24,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:24,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:24,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:24,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:24,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:26:24,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:24,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-13 08:26:24,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:24,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:24,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:24,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 08:26:24,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:24,498 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:24,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078055515] [2020-10-13 08:26:24,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:24,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:24,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872969346] [2020-10-13 08:26:24,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:24,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:24,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:24,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:24,503 INFO L87 Difference]: Start difference. First operand 18643 states and 22913 transitions. Second operand 5 states. [2020-10-13 08:26:39,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:39,184 INFO L93 Difference]: Finished difference Result 43490 states and 55222 transitions. [2020-10-13 08:26:39,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:39,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-13 08:26:39,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:39,298 INFO L225 Difference]: With dead ends: 43490 [2020-10-13 08:26:39,299 INFO L226 Difference]: Without dead ends: 24853 [2020-10-13 08:26:39,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 08:26:39,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24853 states. [2020-10-13 08:26:40,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24853 to 24837. [2020-10-13 08:26:40,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24837 states. [2020-10-13 08:26:40,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24837 states to 24837 states and 29889 transitions. [2020-10-13 08:26:40,072 INFO L78 Accepts]: Start accepts. Automaton has 24837 states and 29889 transitions. Word has length 188 [2020-10-13 08:26:40,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:40,073 INFO L479 AbstractCegarLoop]: Abstraction has 24837 states and 29889 transitions. [2020-10-13 08:26:40,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:40,074 INFO L276 IsEmpty]: Start isEmpty. Operand 24837 states and 29889 transitions. [2020-10-13 08:26:40,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-13 08:26:40,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:40,087 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:26:40,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:26:40,088 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:40,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:40,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1836770767, now seen corresponding path program 1 times [2020-10-13 08:26:40,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:40,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413885684] [2020-10-13 08:26:40,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:40,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:40,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:41,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:41,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:41,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-13 08:26:41,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:26:41,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1834 [2020-10-13 08:26:41,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:41,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:41,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-13 08:26:41,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:26:41,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:42,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:42,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:42,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:42,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:42,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:42,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:26:42,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:42,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:42,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:42,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:42,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:42,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:42,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:42,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:42,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 08:26:42,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:42,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-13 08:26:42,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 08:26:42,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:42,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413885684] [2020-10-13 08:26:42,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:42,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:42,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431912310] [2020-10-13 08:26:42,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:42,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:42,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:42,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:42,538 INFO L87 Difference]: Start difference. First operand 24837 states and 29889 transitions. Second operand 5 states. [2020-10-13 08:26:54,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:54,450 INFO L93 Difference]: Finished difference Result 70561 states and 87301 transitions. [2020-10-13 08:26:54,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:54,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2020-10-13 08:26:54,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:54,587 INFO L225 Difference]: With dead ends: 70561 [2020-10-13 08:26:54,588 INFO L226 Difference]: Without dead ends: 45730 [2020-10-13 08:26:54,649 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 08:26:54,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45730 states. [2020-10-13 08:26:55,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45730 to 44947. [2020-10-13 08:26:55,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44947 states. [2020-10-13 08:26:55,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44947 states to 44947 states and 55182 transitions. [2020-10-13 08:26:55,662 INFO L78 Accepts]: Start accepts. Automaton has 44947 states and 55182 transitions. Word has length 248 [2020-10-13 08:26:55,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:55,663 INFO L479 AbstractCegarLoop]: Abstraction has 44947 states and 55182 transitions. [2020-10-13 08:26:55,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:55,663 INFO L276 IsEmpty]: Start isEmpty. Operand 44947 states and 55182 transitions. [2020-10-13 08:26:55,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-13 08:26:55,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:55,679 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:26:55,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:26:55,680 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:55,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:55,680 INFO L82 PathProgramCache]: Analyzing trace with hash -608516290, now seen corresponding path program 1 times [2020-10-13 08:26:55,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:55,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169961772] [2020-10-13 08:26:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:55,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:56,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:57,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:57,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-13 08:26:57,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:26:57,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1498 [2020-10-13 08:26:57,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:57,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:57,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 218 [2020-10-13 08:26:57,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:26:57,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:57,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:57,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:57,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:57,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:57,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:57,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:26:57,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:57,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:57,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:57,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:57,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:57,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-13 08:26:57,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:57,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-13 08:26:57,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:57,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:57,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:57,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-13 08:26:57,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:58,143 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:58,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169961772] [2020-10-13 08:26:58,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:58,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:58,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815670407] [2020-10-13 08:26:58,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:58,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:58,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:58,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:58,162 INFO L87 Difference]: Start difference. First operand 44947 states and 55182 transitions. Second operand 5 states. [2020-10-13 08:27:11,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:11,556 INFO L93 Difference]: Finished difference Result 99189 states and 125096 transitions. [2020-10-13 08:27:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:27:11,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 275 [2020-10-13 08:27:11,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:11,725 INFO L225 Difference]: With dead ends: 99189 [2020-10-13 08:27:11,726 INFO L226 Difference]: Without dead ends: 54248 [2020-10-13 08:27:11,820 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 08:27:11,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54248 states. [2020-10-13 08:27:12,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54248 to 54232. [2020-10-13 08:27:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54232 states. [2020-10-13 08:27:12,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54232 states to 54232 states and 65925 transitions. [2020-10-13 08:27:12,981 INFO L78 Accepts]: Start accepts. Automaton has 54232 states and 65925 transitions. Word has length 275 [2020-10-13 08:27:12,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:12,982 INFO L479 AbstractCegarLoop]: Abstraction has 54232 states and 65925 transitions. [2020-10-13 08:27:12,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:27:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 54232 states and 65925 transitions. [2020-10-13 08:27:13,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-13 08:27:13,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:13,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:27:13,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:27:13,020 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:13,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:13,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1954807434, now seen corresponding path program 1 times [2020-10-13 08:27:13,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:13,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681581015] [2020-10-13 08:27:13,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:15,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:17,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:17,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-13 08:27:17,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:27:17,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3263 [2020-10-13 08:27:17,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:17,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:27:17,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-13 08:27:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:27:17,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:18,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:18,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:18,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:18,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:18,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:18,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:27:18,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:18,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:18,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:18,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:18,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:18,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:18,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:18,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:27:18,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:18,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-13 08:27:18,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:18,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:18,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:18,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-13 08:27:18,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:19,014 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:27:19,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681581015] [2020-10-13 08:27:19,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:19,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:27:19,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877323897] [2020-10-13 08:27:19,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:27:19,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:19,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:27:19,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:27:19,018 INFO L87 Difference]: Start difference. First operand 54232 states and 65925 transitions. Second operand 8 states. [2020-10-13 08:27:22,461 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-13 08:27:31,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:31,978 INFO L93 Difference]: Finished difference Result 108604 states and 132285 transitions. [2020-10-13 08:27:31,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:27:31,979 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 335 [2020-10-13 08:27:31,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:32,121 INFO L225 Difference]: With dead ends: 108604 [2020-10-13 08:27:32,121 INFO L226 Difference]: Without dead ends: 54248 [2020-10-13 08:27:32,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:27:32,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54248 states. [2020-10-13 08:27:33,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54248 to 54232. [2020-10-13 08:27:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54232 states. [2020-10-13 08:27:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54232 states to 54232 states and 65867 transitions. [2020-10-13 08:27:33,328 INFO L78 Accepts]: Start accepts. Automaton has 54232 states and 65867 transitions. Word has length 335 [2020-10-13 08:27:33,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:33,329 INFO L479 AbstractCegarLoop]: Abstraction has 54232 states and 65867 transitions. [2020-10-13 08:27:33,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:27:33,329 INFO L276 IsEmpty]: Start isEmpty. Operand 54232 states and 65867 transitions. [2020-10-13 08:27:33,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2020-10-13 08:27:33,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:33,446 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:27:33,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:27:33,446 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:33,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:33,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1000529661, now seen corresponding path program 1 times [2020-10-13 08:27:33,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:33,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836954051] [2020-10-13 08:27:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:33,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:34,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:35,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:38,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:38,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 730 [2020-10-13 08:27:38,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:27:38,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-13 08:27:38,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:38,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:27:38,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:27:38,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 08:27:38,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:38,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:38,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:38,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:38,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:38,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:38,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:27:38,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:38,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:38,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:38,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:27:38,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:38,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:38,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:38,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:38,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:27:38,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:38,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-13 08:27:38,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:38,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:38,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:27:38,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 08:27:38,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:39,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 08:27:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:39,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:39,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:39,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 546 [2020-10-13 08:27:39,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:39,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-13 08:27:39,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 543 [2020-10-13 08:27:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:39,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:39,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:27:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:39,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:39,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:39,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-13 08:27:39,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:39,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:27:39,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:39,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:39,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:39,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:39,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:39,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:27:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:39,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:39,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:39,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 08:27:39,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:39,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:27:39,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:39,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 120 proven. 101 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:27:40,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836954051] [2020-10-13 08:27:40,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:40,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:27:40,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379145062] [2020-10-13 08:27:40,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:27:40,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:40,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:27:40,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:27:40,512 INFO L87 Difference]: Start difference. First operand 54232 states and 65867 transitions. Second operand 7 states. [2020-10-13 08:27:55,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:55,785 INFO L93 Difference]: Finished difference Result 108973 states and 134810 transitions. [2020-10-13 08:27:55,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:27:55,787 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 714 [2020-10-13 08:27:55,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:55,965 INFO L225 Difference]: With dead ends: 108973 [2020-10-13 08:27:55,965 INFO L226 Difference]: Without dead ends: 54747 [2020-10-13 08:27:56,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:27:56,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54747 states. [2020-10-13 08:27:56,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54747 to 52340. [2020-10-13 08:27:56,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52340 states. [2020-10-13 08:27:56,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52340 states to 52340 states and 60508 transitions. [2020-10-13 08:27:56,968 INFO L78 Accepts]: Start accepts. Automaton has 52340 states and 60508 transitions. Word has length 714 [2020-10-13 08:27:56,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:56,969 INFO L479 AbstractCegarLoop]: Abstraction has 52340 states and 60508 transitions. [2020-10-13 08:27:56,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:27:56,969 INFO L276 IsEmpty]: Start isEmpty. Operand 52340 states and 60508 transitions. [2020-10-13 08:27:57,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2020-10-13 08:27:57,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:57,066 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:27:57,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:27:57,067 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:57,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:57,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1572103258, now seen corresponding path program 1 times [2020-10-13 08:27:57,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:57,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811765197] [2020-10-13 08:27:57,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:57,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:58,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:00,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:02,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:02,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 773 [2020-10-13 08:28:02,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:28:02,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-13 08:28:02,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:02,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 08:28:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 08:28:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 542 [2020-10-13 08:28:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:02,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:02,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:02,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:02,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:02,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:28:02,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:02,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:02,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:02,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:02,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:02,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 08:28:02,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:02,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-13 08:28:02,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-13 08:28:02,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:02,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-13 08:28:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:03,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:04,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:04,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 546 [2020-10-13 08:28:04,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:04,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1361 [2020-10-13 08:28:04,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:04,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 08:28:04,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:28:04,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 546 [2020-10-13 08:28:04,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:04,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:28:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:04,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:05,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:05,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-13 08:28:05,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:05,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1227 [2020-10-13 08:28:05,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:05,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:28:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:28:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-13 08:28:05,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:06,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:28:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:06,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:06,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:06,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 08:28:06,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:06,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:28:06,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:06,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:28:06,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:28:06,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 08:28:06,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:06,686 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:28:06,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811765197] [2020-10-13 08:28:06,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:06,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:28:06,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858178513] [2020-10-13 08:28:06,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:28:06,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:06,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:28:06,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:28:06,690 INFO L87 Difference]: Start difference. First operand 52340 states and 60508 transitions. Second operand 7 states. [2020-10-13 08:28:22,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:22,316 INFO L93 Difference]: Finished difference Result 109665 states and 128361 transitions. [2020-10-13 08:28:22,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:28:22,319 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 757 [2020-10-13 08:28:22,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:22,459 INFO L225 Difference]: With dead ends: 109665 [2020-10-13 08:28:22,460 INFO L226 Difference]: Without dead ends: 54228 [2020-10-13 08:28:22,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:28:22,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54228 states. [2020-10-13 08:28:23,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54228 to 51753. [2020-10-13 08:28:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51753 states. [2020-10-13 08:28:23,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51753 states to 51753 states and 57539 transitions. [2020-10-13 08:28:23,365 INFO L78 Accepts]: Start accepts. Automaton has 51753 states and 57539 transitions. Word has length 757 [2020-10-13 08:28:23,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:23,367 INFO L479 AbstractCegarLoop]: Abstraction has 51753 states and 57539 transitions. [2020-10-13 08:28:23,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:28:23,367 INFO L276 IsEmpty]: Start isEmpty. Operand 51753 states and 57539 transitions. [2020-10-13 08:28:23,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2020-10-13 08:28:23,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:23,428 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:28:23,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:28:23,428 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:23,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:23,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1558254426, now seen corresponding path program 1 times [2020-10-13 08:28:23,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:23,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595804841] [2020-10-13 08:28:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:23,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:28,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:28,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:28,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:28,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 815 [2020-10-13 08:28:28,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:28:28,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 08:28:28,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:28,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:28:28,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:28:28,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 08:28:28,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:28,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:28,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:28,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:28,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:28,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:28,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:28:28,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:28,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:28,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:28,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:28:28,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:28,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:28,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:28,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:28,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 08:28:28,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:28,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 08:28:28,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:28,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:28,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:28:28,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:28:28,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:28,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 08:28:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:28,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:28,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:28,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:28:28,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:28,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:28:28,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 08:28:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:28,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:28,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 08:28:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:29,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:29,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:29,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 546 [2020-10-13 08:28:29,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:29,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-13 08:28:29,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:29,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:29,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 543 [2020-10-13 08:28:29,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:29,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:29,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:28:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:29,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:29,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:29,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-13 08:28:29,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:29,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 08:28:29,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:29,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:29,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:29,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:28:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:29,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:29,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:29,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 08:28:29,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:29,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:28:29,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:29,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:29,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:29,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:29,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 180 proven. 156 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-13 08:28:29,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595804841] [2020-10-13 08:28:29,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:29,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:28:29,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124225828] [2020-10-13 08:28:29,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:28:29,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:29,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:28:29,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:28:29,978 INFO L87 Difference]: Start difference. First operand 51753 states and 57539 transitions. Second operand 7 states.