/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 SingleStatement --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_15x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:04:03,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:04:03,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:04:03,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:04:03,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:04:03,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:04:03,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:04:03,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:04:03,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:04:03,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:04:03,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:04:03,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:04:03,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:04:03,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:04:03,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:04:03,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:04:03,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:04:03,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:04:03,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:04:03,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:04:03,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:04:03,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:04:03,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:04:03,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:04:03,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:04:03,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:04:03,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:04:03,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:04:03,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:04:03,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:04:03,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:04:03,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:04:03,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:04:03,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:04:03,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:04:03,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:04:03,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:04:03,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:04:03,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:04:03,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:04:03,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:04:03,108 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 [2020-09-25 02:04:03,136 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:04:03,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:04:03,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:04:03,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:04:03,138 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:04:03,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:04:03,138 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:04:03,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:04:03,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:04:03,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:04:03,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:04:03,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:04:03,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:04:03,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:04:03,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:04:03,140 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:04:03,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:04:03,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:04:03,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:04:03,141 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:04:03,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:04:03,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:04:03,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:04:03,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:04:03,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:04:03,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:04:03,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:04:03,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:04:03,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:04:03,143 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 -> SingleStatement 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; 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; 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; 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; 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; [2020-09-25 02:04:03,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:04:03,673 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:04:03,678 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:04:03,680 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:04:03,680 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:04:03,681 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_15x0-1.c [2020-09-25 02:04:03,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b74c9f28/e6fec205e351491d9fe3bbd1253f7c53/FLAGf079e4034 [2020-09-25 02:04:04,315 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:04:04,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_15x0-1.c [2020-09-25 02:04:04,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b74c9f28/e6fec205e351491d9fe3bbd1253f7c53/FLAGf079e4034 [2020-09-25 02:04:04,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b74c9f28/e6fec205e351491d9fe3bbd1253f7c53 [2020-09-25 02:04:04,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:04:04,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:04:04,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:04:04,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:04:04,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:04:04,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:04:04" (1/1) ... [2020-09-25 02:04:04,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd4ce29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:04, skipping insertion in model container [2020-09-25 02:04:04,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:04:04" (1/1) ... [2020-09-25 02:04:04,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:04:04,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:04:05,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:04:05,024 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:04:05,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:04:05,063 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:04:05,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:05 WrapperNode [2020-09-25 02:04:05,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:04:05,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:04:05,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:04:05,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:04:05,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:05" (1/1) ... [2020-09-25 02:04:05,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:05" (1/1) ... [2020-09-25 02:04:05,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:05" (1/1) ... [2020-09-25 02:04:05,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:05" (1/1) ... [2020-09-25 02:04:05,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:05" (1/1) ... [2020-09-25 02:04:05,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:05" (1/1) ... [2020-09-25 02:04:05,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:05" (1/1) ... [2020-09-25 02:04:05,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:04:05,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:04:05,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:04:05,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:04:05,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:05" (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 [2020-09-25 02:04:05,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:04:05,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:04:05,263 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-25 02:04:05,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:04:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:04:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-25 02:04:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:04:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:04:05,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:04:05,469 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:04:05,470 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:04:05,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:04:05 BoogieIcfgContainer [2020-09-25 02:04:05,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:04:05,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:04:05,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:04:05,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:04:05,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:04:04" (1/3) ... [2020-09-25 02:04:05,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26209795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:04:05, skipping insertion in model container [2020-09-25 02:04:05,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:05" (2/3) ... [2020-09-25 02:04:05,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26209795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:04:05, skipping insertion in model container [2020-09-25 02:04:05,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:04:05" (3/3) ... [2020-09-25 02:04:05,486 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_15x0-1.c [2020-09-25 02:04:05,499 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:04:05,509 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:04:05,533 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:04:05,582 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:04:05,582 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:04:05,582 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:04:05,583 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:04:05,583 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:04:05,583 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:04:05,584 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:04:05,584 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:04:05,614 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 02:04:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 02:04:05,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:05,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:05,626 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:05,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:05,635 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-25 02:04:05,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:05,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573562584] [2020-09-25 02:04:05,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:05,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:05,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:06,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:06,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 02:04:06,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:06,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-09-25 02:04:06,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:04:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:04:06,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:04:06,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:06,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:06,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:06,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:06,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:06,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:04:06,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:06,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:06,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:06,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:06,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:06,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:06,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:06,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:06,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:06,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:06,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 02:04:06,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:06,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:04:06,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:04:06,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:04:06,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573562584] [2020-09-25 02:04:06,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:04:06,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:04:06,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870181636] [2020-09-25 02:04:06,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:04:06,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:06,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:04:06,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:04:06,455 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-25 02:04:06,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:06,565 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-25 02:04:06,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:04:06,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 02:04:06,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:06,581 INFO L225 Difference]: With dead ends: 39 [2020-09-25 02:04:06,582 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 02:04:06,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:04:06,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 02:04:06,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-25 02:04:06,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 02:04:06,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-25 02:04:06,636 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-25 02:04:06,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:06,637 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-25 02:04:06,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:04:06,637 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-25 02:04:06,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 02:04:06,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:06,640 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:06,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:04:06,641 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:06,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:06,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-25 02:04:06,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:06,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626021658] [2020-09-25 02:04:06,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:06,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:06,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:07,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:07,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:04:07,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:07,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-09-25 02:04:07,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:07,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:04:07,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:07,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:04:07,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:04:07,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:07,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:07,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:07,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:07,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:07,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:04:07,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:07,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:07,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:07,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:07,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:07,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:07,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:07,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 02:04:07,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:07,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:04:07,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:07,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:04:07,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:07,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:07,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:07,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:07,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:07,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:07,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 02:04:07,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:07,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:07,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:07,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:07,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:04:07,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626021658] [2020-09-25 02:04:07,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:07,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:04:07,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601261299] [2020-09-25 02:04:07,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:04:07,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:07,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:04:07,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:04:07,406 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 7 states. [2020-09-25 02:04:07,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:07,490 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-25 02:04:07,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:04:07,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-25 02:04:07,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:07,492 INFO L225 Difference]: With dead ends: 36 [2020-09-25 02:04:07,493 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:04:07,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:04:07,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:04:07,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 02:04:07,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 02:04:07,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 02:04:07,504 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-25 02:04:07,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:07,505 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 02:04:07,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:04:07,505 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 02:04:07,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 02:04:07,510 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:07,510 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:07,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:04:07,511 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:07,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:07,511 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-25 02:04:07,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:07,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847822211] [2020-09-25 02:04:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:07,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:07,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:08,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:08,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 02:04:08,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:08,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-09-25 02:04:08,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:08,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:04:08,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:08,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:08,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:08,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:08,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:08,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:08,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:08,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:08,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:04:08,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:08,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:08,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:08,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:08,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:08,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:08,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:08,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 02:04:08,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:08,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:04:08,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:08,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:04:08,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:08,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:08,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:08,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:08,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:08,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:08,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 02:04:08,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:08,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:08,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:08,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:08,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:08,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:08,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:08,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:08,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 02:04:08,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:08,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:08,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 02:04:08,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847822211] [2020-09-25 02:04:08,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:08,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:04:08,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736870482] [2020-09-25 02:04:08,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:04:08,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:08,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:04:08,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:04:08,390 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 7 states. [2020-09-25 02:04:08,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:08,485 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-09-25 02:04:08,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:04:08,485 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 02:04:08,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:08,487 INFO L225 Difference]: With dead ends: 41 [2020-09-25 02:04:08,487 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 02:04:08,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:04:08,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 02:04:08,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-25 02:04:08,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 02:04:08,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-25 02:04:08,496 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-09-25 02:04:08,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:08,497 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-25 02:04:08,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:04:08,497 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-25 02:04:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 02:04:08,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:08,499 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:08,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:04:08,500 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:08,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:08,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-09-25 02:04:08,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:08,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431955590] [2020-09-25 02:04:08,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:08,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:08,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:09,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:09,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 02:04:09,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:09,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 869 [2020-09-25 02:04:09,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:04:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 02:04:09,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:09,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:09,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:09,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:09,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:09,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:09,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:04:09,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:09,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:09,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:09,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:09,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:09,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:09,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:09,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:09,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:09,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:09,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 02:04:09,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:09,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:04:09,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:09,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 02:04:09,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:09,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:09,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:09,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:09,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:09,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:09,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 02:04:09,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:09,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:09,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:09,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:09,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:09,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:09,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:09,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:09,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:09,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 02:04:09,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:09,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:09,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:09,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:09,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:09,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:09,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:09,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:09,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:09,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:09,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 02:04:09,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:09,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 02:04:09,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431955590] [2020-09-25 02:04:09,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:09,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:04:09,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314149715] [2020-09-25 02:04:09,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:04:09,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:09,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:04:09,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:04:09,916 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states. [2020-09-25 02:04:10,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:10,035 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-25 02:04:10,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:04:10,036 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 02:04:10,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:10,037 INFO L225 Difference]: With dead ends: 46 [2020-09-25 02:04:10,037 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 02:04:10,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:04:10,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 02:04:10,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 02:04:10,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:04:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-25 02:04:10,058 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-09-25 02:04:10,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:10,059 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-25 02:04:10,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:04:10,059 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-25 02:04:10,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 02:04:10,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:10,062 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:10,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:04:10,062 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:10,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:10,063 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-09-25 02:04:10,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:10,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666492286] [2020-09-25 02:04:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:10,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:10,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:11,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:11,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 02:04:11,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:11,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1217 [2020-09-25 02:04:11,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:11,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:04:11,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:11,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 02:04:11,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:11,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:11,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:11,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:11,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:11,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:11,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:11,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:11,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:11,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:11,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:11,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:11,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:11,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:11,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:11,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:11,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:11,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-25 02:04:11,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:11,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:04:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:04:11,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:11,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:11,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:11,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:11,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:11,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 02:04:11,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:11,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:11,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:11,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:11,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:11,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:11,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:11,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 02:04:11,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:11,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:11,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:11,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:12,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:12,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:12,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:12,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 02:04:12,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:12,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:12,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:12,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:12,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:12,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:12,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:12,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:12,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:04:12,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:12,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:12,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:12,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 02:04:12,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666492286] [2020-09-25 02:04:12,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:12,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:04:12,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075741057] [2020-09-25 02:04:12,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:04:12,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:12,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:04:12,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:04:12,121 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 10 states. [2020-09-25 02:04:12,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:12,248 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 02:04:12,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:04:12,248 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-09-25 02:04:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:12,253 INFO L225 Difference]: With dead ends: 51 [2020-09-25 02:04:12,253 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 02:04:12,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:04:12,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 02:04:12,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 02:04:12,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 02:04:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-25 02:04:12,271 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-09-25 02:04:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:12,273 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-25 02:04:12,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:04:12,273 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-25 02:04:12,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 02:04:12,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:12,277 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:12,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:04:12,278 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:12,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:12,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-09-25 02:04:12,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:12,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000226533] [2020-09-25 02:04:12,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:12,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:12,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:14,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:14,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 02:04:14,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:14,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1792 [2020-09-25 02:04:14,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:04:14,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:14,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:04:14,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:14,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:14,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:14,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:14,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:14,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:14,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:14,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:14,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:14,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:14,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:14,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:14,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:14,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:14,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:14,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:14,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-09-25 02:04:14,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:14,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:04:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 02:04:14,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:14,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:14,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:14,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:14,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:14,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:14,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-25 02:04:14,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:14,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:14,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:14,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:14,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:14,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:14,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:14,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:15,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:15,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:15,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 02:04:15,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:15,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:15,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:15,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:15,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:15,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:15,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:15,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:15,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:15,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:15,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 02:04:15,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:15,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:15,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:15,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:15,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:15,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:15,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:15,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:15,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:15,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:15,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 02:04:15,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:15,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:15,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:15,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:15,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:15,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:15,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:15,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:04:15,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:15,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:15,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:15,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:15,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-25 02:04:15,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000226533] [2020-09-25 02:04:15,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:15,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:04:15,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392301930] [2020-09-25 02:04:15,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:04:15,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:15,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:04:15,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:04:15,267 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 10 states. [2020-09-25 02:04:15,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:15,383 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-09-25 02:04:15,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 02:04:15,384 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-09-25 02:04:15,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:15,385 INFO L225 Difference]: With dead ends: 56 [2020-09-25 02:04:15,385 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 02:04:15,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:04:15,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 02:04:15,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 02:04:15,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 02:04:15,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 02:04:15,394 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-09-25 02:04:15,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:15,394 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 02:04:15,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:04:15,394 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 02:04:15,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 02:04:15,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:15,396 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:15,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:04:15,396 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:15,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:15,397 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-09-25 02:04:15,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:15,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877732304] [2020-09-25 02:04:15,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:15,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:15,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:17,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:17,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-25 02:04:17,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:17,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1967 [2020-09-25 02:04:17,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:17,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:04:17,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:17,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 02:04:17,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:17,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:17,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:17,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:17,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:17,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:04:17,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:17,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:17,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:17,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:17,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:17,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:04:17,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:17,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-09-25 02:04:17,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:17,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:04:17,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 02:04:17,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:17,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:17,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:18,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:18,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:18,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:18,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-09-25 02:04:18,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:18,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:18,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:18,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:04:18,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:18,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:18,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:18,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:18,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:18,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:18,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 02:04:18,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:18,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:18,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:18,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:18,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:18,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:18,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:18,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:18,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:18,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:18,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 02:04:18,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:18,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:18,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:18,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:18,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:18,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:18,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:18,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:18,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:18,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:18,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 02:04:18,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:18,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:18,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:18,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:18,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:18,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:18,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:18,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:18,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 02:04:18,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:18,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:18,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:18,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:18,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:18,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:18,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:18,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:18,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:04:18,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:18,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:18,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:18,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:18,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 15 proven. 100 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 02:04:18,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877732304] [2020-09-25 02:04:18,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:18,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 02:04:18,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594102136] [2020-09-25 02:04:18,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:04:18,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:18,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:04:18,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:04:18,949 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 12 states. [2020-09-25 02:04:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:19,082 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-25 02:04:19,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:04:19,083 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-25 02:04:19,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:19,085 INFO L225 Difference]: With dead ends: 61 [2020-09-25 02:04:19,085 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 02:04:19,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-25 02:04:19,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 02:04:19,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 02:04:19,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 02:04:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-09-25 02:04:19,093 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-09-25 02:04:19,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:19,094 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-09-25 02:04:19,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:04:19,094 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-09-25 02:04:19,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 02:04:19,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:19,096 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:19,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:04:19,096 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:19,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:19,097 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-09-25 02:04:19,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:19,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708174597] [2020-09-25 02:04:19,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:19,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:19,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:21,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:21,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 02:04:21,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:21,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1930 [2020-09-25 02:04:21,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:21,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 02:04:21,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:21,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 02:04:21,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:21,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:21,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:21,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:21,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:21,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:21,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:21,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:21,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:21,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:21,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:21,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:21,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:21,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:21,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:04:21,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:21,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-09-25 02:04:21,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:21,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 02:04:21,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:21,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 02:04:21,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:21,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:21,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:21,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:21,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:04:21,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:21,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-09-25 02:04:21,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:21,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:04:21,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:21,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:21,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:22,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:22,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:22,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:22,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-09-25 02:04:22,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:22,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:22,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:22,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:04:22,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:22,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:22,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:22,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:22,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:22,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:22,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 02:04:22,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:22,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:22,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:22,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:22,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:22,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:22,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:22,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:22,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:22,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:22,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 02:04:22,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:22,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:22,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:22,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:22,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:22,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:22,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:22,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 02:04:22,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:22,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:22,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:22,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:22,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:22,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:22,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:22,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:22,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:22,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:22,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 02:04:22,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:22,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:22,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:22,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:22,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:22,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:22,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:22,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:22,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:22,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:22,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:04:22,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:22,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:22,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:22,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:22,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:22,989 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 15 proven. 124 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-25 02:04:22,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708174597] [2020-09-25 02:04:22,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:22,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 02:04:22,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736988724] [2020-09-25 02:04:22,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 02:04:22,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:22,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 02:04:22,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:04:22,991 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 13 states. [2020-09-25 02:04:23,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:23,182 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-09-25 02:04:23,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:04:23,183 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-09-25 02:04:23,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:23,186 INFO L225 Difference]: With dead ends: 66 [2020-09-25 02:04:23,186 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 02:04:23,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-25 02:04:23,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 02:04:23,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 02:04:23,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 02:04:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 02:04:23,198 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-09-25 02:04:23,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:23,199 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 02:04:23,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 02:04:23,199 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 02:04:23,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 02:04:23,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:23,204 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:23,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:04:23,205 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:23,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:23,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-09-25 02:04:23,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:23,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457717279] [2020-09-25 02:04:23,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:23,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:23,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:26,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:26,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 02:04:26,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:26,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3356 [2020-09-25 02:04:26,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 02:04:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 02:04:26,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:26,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:26,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:26,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:26,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:26,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:26,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:26,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:26,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:26,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:26,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:27,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:27,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 02:04:27,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:27,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-09-25 02:04:27,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 02:04:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:27,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 02:04:27,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:27,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:27,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:27,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:27,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:04:27,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:27,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-09-25 02:04:27,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:27,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:04:27,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:27,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:04:27,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:27,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:27,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:28,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:28,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:04:28,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:28,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-09-25 02:04:28,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:28,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:04:28,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:28,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:28,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:28,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:28,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:28,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:28,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-09-25 02:04:28,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:28,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:04:28,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:28,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:28,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:28,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:28,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:28,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:28,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 02:04:28,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:28,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:28,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:28,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:28,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:28,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:28,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:29,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:29,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:29,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:29,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 02:04:29,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:29,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:29,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:29,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:29,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:29,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:29,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:29,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:29,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:29,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 02:04:29,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:29,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:29,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:29,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:29,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:29,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:29,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:29,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 02:04:29,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:29,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:29,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:29,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:29,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:29,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:29,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:29,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:04:29,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:29,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:29,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:29,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:29,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 18 proven. 178 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-09-25 02:04:29,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457717279] [2020-09-25 02:04:29,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:29,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 02:04:29,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875680824] [2020-09-25 02:04:29,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 02:04:29,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:29,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 02:04:29,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:04:29,354 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 14 states. [2020-09-25 02:04:29,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:29,535 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 02:04:29,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:04:29,536 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 90 [2020-09-25 02:04:29,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:29,538 INFO L225 Difference]: With dead ends: 71 [2020-09-25 02:04:29,538 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 02:04:29,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-09-25 02:04:29,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 02:04:29,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 02:04:29,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 02:04:29,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-09-25 02:04:29,545 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-09-25 02:04:29,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:29,546 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-09-25 02:04:29,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 02:04:29,546 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-09-25 02:04:29,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 02:04:29,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:29,547 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:29,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:04:29,548 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:29,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:29,549 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-09-25 02:04:29,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:29,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801319926] [2020-09-25 02:04:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:29,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:30,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:31,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:31,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 02:04:31,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:31,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2149 [2020-09-25 02:04:31,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:31,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 02:04:31,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:31,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 02:04:31,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:31,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:31,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:31,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:31,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:31,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:31,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:31,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:31,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:31,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:31,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:31,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:31,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:31,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:32,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:32,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 02:04:32,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:32,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-09-25 02:04:32,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:32,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 02:04:32,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:32,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 02:04:32,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:32,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:32,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:32,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:32,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 02:04:32,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:32,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-09-25 02:04:32,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:04:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 02:04:32,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:32,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:32,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:33,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:04:33,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:33,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-09-25 02:04:33,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:33,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:04:33,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:33,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:04:33,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:33,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:33,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:33,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:04:33,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:33,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-09-25 02:04:33,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:33,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:33,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:33,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:04:33,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:33,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:33,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:34,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:34,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 02:04:34,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:34,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:04:34,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:34,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:34,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:34,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 02:04:34,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:34,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:34,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:34,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:34,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:34,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:34,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 02:04:34,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:34,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:34,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:34,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:34,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:34,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:34,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 02:04:34,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:34,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:34,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:34,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:34,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:34,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:34,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 02:04:34,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:34,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:34,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:34,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:34,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:04:34,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:34,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:34,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 18 proven. 226 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-09-25 02:04:34,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801319926] [2020-09-25 02:04:34,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:34,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 02:04:34,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076262734] [2020-09-25 02:04:34,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 02:04:34,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:34,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 02:04:34,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:04:34,656 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 15 states. [2020-09-25 02:04:34,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:34,835 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-09-25 02:04:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 02:04:34,836 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 99 [2020-09-25 02:04:34,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:34,837 INFO L225 Difference]: With dead ends: 76 [2020-09-25 02:04:34,837 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 02:04:34,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-25 02:04:34,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 02:04:34,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 02:04:34,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 02:04:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 02:04:34,853 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 99 [2020-09-25 02:04:34,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:34,853 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 02:04:34,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 02:04:34,853 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 02:04:34,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 02:04:34,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:34,855 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:34,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 02:04:34,855 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:34,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:34,856 INFO L82 PathProgramCache]: Analyzing trace with hash -276966773, now seen corresponding path program 10 times [2020-09-25 02:04:34,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:34,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239975813] [2020-09-25 02:04:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:38,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:38,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 02:04:38,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:38,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3127 [2020-09-25 02:04:38,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 02:04:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 02:04:38,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:38,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:38,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:38,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:38,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:38,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:38,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:38,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:38,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:38,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:38,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:38,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:38,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:38,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 02:04:38,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:38,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-09-25 02:04:38,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:38,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 02:04:38,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:38,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 02:04:38,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:38,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:38,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:39,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:39,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 02:04:39,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:39,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-09-25 02:04:39,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:39,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 02:04:39,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 02:04:39,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:39,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:39,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:39,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:39,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 02:04:39,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:39,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-09-25 02:04:39,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:39,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:04:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 02:04:39,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:39,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:39,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:40,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:40,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:04:40,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:40,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-09-25 02:04:40,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:04:40,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:40,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:04:40,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:40,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:40,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:40,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:40,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:04:40,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:40,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-25 02:04:40,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:04:40,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:40,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:40,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:41,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:41,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:41,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:41,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-25 02:04:41,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:41,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:04:41,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:41,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:41,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:41,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:41,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:41,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:41,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 02:04:41,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:41,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:41,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:41,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:41,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:41,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:41,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:41,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:41,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:41,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:41,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 02:04:41,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:41,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:41,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:41,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:41,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:41,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:41,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:41,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 02:04:41,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:41,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:41,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:41,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:41,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:41,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:41,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:41,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:41,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 02:04:41,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:41,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:41,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:41,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:41,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:41,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:41,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:41,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:41,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:41,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:41,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:04:41,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:41,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:41,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:41,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:41,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:41,746 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 24 proven. 301 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-09-25 02:04:41,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239975813] [2020-09-25 02:04:41,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:41,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 02:04:41,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798183903] [2020-09-25 02:04:41,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:04:41,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:41,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:04:41,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:04:41,751 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 16 states. [2020-09-25 02:04:41,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:41,911 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-09-25 02:04:41,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 02:04:41,912 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-09-25 02:04:41,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:41,914 INFO L225 Difference]: With dead ends: 81 [2020-09-25 02:04:41,914 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 02:04:41,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-09-25 02:04:41,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 02:04:41,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-09-25 02:04:41,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 02:04:41,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-09-25 02:04:41,921 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 108 [2020-09-25 02:04:41,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:41,922 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-09-25 02:04:41,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:04:41,922 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-09-25 02:04:41,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 02:04:41,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:41,923 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:41,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 02:04:41,924 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:41,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:41,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1749540651, now seen corresponding path program 11 times [2020-09-25 02:04:41,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:41,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603899961] [2020-09-25 02:04:41,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:41,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:42,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:46,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:46,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 02:04:46,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:46,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4081 [2020-09-25 02:04:46,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 02:04:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 02:04:46,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:46,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:46,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:46,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:46,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:46,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:46,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:46,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:46,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:46,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:46,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:46,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:46,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:46,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:46,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:46,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 02:04:46,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:46,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 899 [2020-09-25 02:04:46,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:46,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 02:04:46,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:46,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 02:04:46,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:46,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 02:04:47,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-09-25 02:04:47,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 02:04:47,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:47,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 02:04:47,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:47,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:48,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:48,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 02:04:48,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:48,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-09-25 02:04:48,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:48,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 02:04:48,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:48,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 02:04:48,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:48,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:48,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:48,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:48,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 02:04:48,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:48,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-09-25 02:04:48,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:48,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:04:48,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:48,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 02:04:48,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:48,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:48,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:49,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:49,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:04:49,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:49,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-09-25 02:04:49,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:49,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:04:49,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:49,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:04:49,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:49,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:49,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:49,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:49,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:04:49,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:49,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-09-25 02:04:49,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:04:49,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:49,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:49,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:49,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:49,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:49,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:49,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-25 02:04:49,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:49,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:04:49,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:49,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:49,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:50,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:50,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:50,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:50,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 02:04:50,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:50,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:50,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:50,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:50,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:50,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:50,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:50,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:50,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:50,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:50,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 02:04:50,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:50,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:50,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:50,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:50,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:50,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:50,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:50,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 02:04:50,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:50,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:50,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:50,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:50,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:50,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:50,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:50,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:50,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:50,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:50,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 02:04:50,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:50,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:50,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:50,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:50,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:50,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:50,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:50,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:04:50,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:50,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:50,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:50,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:50,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 21 proven. 378 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-09-25 02:04:50,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603899961] [2020-09-25 02:04:50,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:50,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 02:04:50,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128354189] [2020-09-25 02:04:50,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 02:04:50,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:50,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 02:04:50,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:04:50,624 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 17 states. [2020-09-25 02:04:50,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:50,843 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2020-09-25 02:04:50,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 02:04:50,843 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 117 [2020-09-25 02:04:50,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:50,845 INFO L225 Difference]: With dead ends: 86 [2020-09-25 02:04:50,845 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 02:04:50,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2020-09-25 02:04:50,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 02:04:50,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-25 02:04:50,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 02:04:50,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2020-09-25 02:04:50,856 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 117 [2020-09-25 02:04:50,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:50,857 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2020-09-25 02:04:50,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 02:04:50,857 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2020-09-25 02:04:50,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 02:04:50,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:50,861 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:50,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 02:04:50,861 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:50,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:50,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1141580405, now seen corresponding path program 12 times [2020-09-25 02:04:50,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:50,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893190898] [2020-09-25 02:04:50,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:50,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:51,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking...