/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_10x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:06:16,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:06:16,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:06:16,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:06:16,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:06:16,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:06:16,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:06:16,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:06:16,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:06:16,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:06:16,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:06:16,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:06:16,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:06:16,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:06:16,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:06:16,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:06:16,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:06:16,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:06:16,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:06:16,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:06:16,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:06:16,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:06:16,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:06:16,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:06:16,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:06:16,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:06:16,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:06:16,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:06:16,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:06:16,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:06:16,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:06:16,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:06:16,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:06:16,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:06:16,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:06:16,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:06:16,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:06:16,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:06:16,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:06:16,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:06:16,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:06:16,508 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 13:06:16,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:06:16,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:06:16,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:06:16,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:06:16,554 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:06:16,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:06:16,554 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:06:16,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:06:16,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:06:16,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:06:16,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:06:16,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:06:16,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:06:16,557 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:06:16,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:06:16,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:06:16,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:06:16,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:06:16,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:06:16,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:06:16,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:06:16,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:06:16,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:06:16,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:06:16,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:06:16,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:06:16,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:06:16,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:06:16,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:06:16,560 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:06:16,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:06:16,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:06:16,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:06:16,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:06:16,902 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:06:16,903 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_10x0-1.c [2020-10-13 13:06:16,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d872e90e/06d4330d353244d7a30b2b3b6f4027b3/FLAGfed9b5f56 [2020-10-13 13:06:17,401 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:06:17,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_10x0-1.c [2020-10-13 13:06:17,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d872e90e/06d4330d353244d7a30b2b3b6f4027b3/FLAGfed9b5f56 [2020-10-13 13:06:17,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d872e90e/06d4330d353244d7a30b2b3b6f4027b3 [2020-10-13 13:06:17,813 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:06:17,815 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:06:17,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:06:17,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:06:17,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:06:17,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:06:17" (1/1) ... [2020-10-13 13:06:17,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3310a15d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:17, skipping insertion in model container [2020-10-13 13:06:17,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:06:17" (1/1) ... [2020-10-13 13:06:17,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:06:17,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:06:18,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:06:18,022 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:06:18,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:06:18,053 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:06:18,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:18 WrapperNode [2020-10-13 13:06:18,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:06:18,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:06:18,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:06:18,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:06:18,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:18" (1/1) ... [2020-10-13 13:06:18,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:18" (1/1) ... [2020-10-13 13:06:18,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:18" (1/1) ... [2020-10-13 13:06:18,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:18" (1/1) ... [2020-10-13 13:06:18,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:18" (1/1) ... [2020-10-13 13:06:18,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:18" (1/1) ... [2020-10-13 13:06:18,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:18" (1/1) ... [2020-10-13 13:06:18,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:06:18,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:06:18,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:06:18,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:06:18,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:06:18,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:06:18,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:06:18,248 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-13 13:06:18,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:06:18,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:06:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-13 13:06:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:06:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:06:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:06:18,420 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:06:18,421 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 13:06:18,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:06:18 BoogieIcfgContainer [2020-10-13 13:06:18,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:06:18,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:06:18,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:06:18,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:06:18,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:06:17" (1/3) ... [2020-10-13 13:06:18,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b08638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:06:18, skipping insertion in model container [2020-10-13 13:06:18,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:18" (2/3) ... [2020-10-13 13:06:18,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b08638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:06:18, skipping insertion in model container [2020-10-13 13:06:18,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:06:18" (3/3) ... [2020-10-13 13:06:18,434 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_10x0-1.c [2020-10-13 13:06:18,447 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:06:18,461 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:06:18,495 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:06:18,548 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:06:18,548 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:06:18,548 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:06:18,548 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:06:18,548 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:06:18,549 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:06:18,549 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:06:18,549 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:06:18,576 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-13 13:06:18,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-13 13:06:18,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:06:18,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:06:18,586 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:06:18,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:06:18,592 INFO L82 PathProgramCache]: Analyzing trace with hash 2001781660, now seen corresponding path program 1 times [2020-10-13 13:06:18,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:06:18,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836528183] [2020-10-13 13:06:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:06:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:18,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:18,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:18,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:18,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 13:06:18,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:06:18,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-13 13:06:18,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:18,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:06:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:06:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:06:18,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 13:06:18,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:06:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:18,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:18,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:18,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:06:18,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:18,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:06:18,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:06:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:18,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:06:18,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:06:18,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:06:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:19,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:19,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:19,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:06:19,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:19,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:06:19,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:06:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:06:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:06:19,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:06:19,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836528183] [2020-10-13 13:06:19,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:06:19,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:06:19,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565434298] [2020-10-13 13:06:19,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:06:19,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:06:19,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:06:19,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:06:19,086 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-10-13 13:06:19,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:06:19,170 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-10-13 13:06:19,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:06:19,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-13 13:06:19,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:06:19,184 INFO L225 Difference]: With dead ends: 30 [2020-10-13 13:06:19,185 INFO L226 Difference]: Without dead ends: 18 [2020-10-13 13:06:19,188 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 [2020-10-13 13:06:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-13 13:06:19,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-13 13:06:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-13 13:06:19,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-10-13 13:06:19,236 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-10-13 13:06:19,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:06:19,236 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-10-13 13:06:19,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:06:19,237 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-10-13 13:06:19,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 13:06:19,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:06:19,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:06:19,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:06:19,240 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:06:19,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:06:19,240 INFO L82 PathProgramCache]: Analyzing trace with hash -118151420, now seen corresponding path program 1 times [2020-10-13 13:06:19,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:06:19,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775204552] [2020-10-13 13:06:19,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:06:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:19,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:19,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:19,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:19,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 13:06:19,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:06:19,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-13 13:06:19,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:19,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:06:19,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:06:19,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:06:19,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:19,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:06:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:19,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:19,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:19,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:06:19,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:19,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:06:19,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:19,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:06:19,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:19,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:06:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:19,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:06:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:19,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:19,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:19,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:06:19,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:19,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 13:06:19,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:19,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:06:19,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:06:19,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:06:19,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:19,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:19,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:19,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:19,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:06:19,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:19,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:06:19,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:06:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:19,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:06:19,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 13:06:19,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775204552] [2020-10-13 13:06:19,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:06:19,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:06:19,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418998734] [2020-10-13 13:06:19,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:06:19,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:06:19,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:06:19,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:06:19,696 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2020-10-13 13:06:19,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:06:19,751 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-10-13 13:06:19,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:06:19,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-13 13:06:19,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:06:19,763 INFO L225 Difference]: With dead ends: 25 [2020-10-13 13:06:19,764 INFO L226 Difference]: Without dead ends: 21 [2020-10-13 13:06:19,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:06:19,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-13 13:06:19,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-13 13:06:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-13 13:06:19,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-13 13:06:19,772 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-10-13 13:06:19,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:06:19,772 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-13 13:06:19,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:06:19,773 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-13 13:06:19,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 13:06:19,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:06:19,774 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:06:19,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:06:19,774 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:06:19,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:06:19,775 INFO L82 PathProgramCache]: Analyzing trace with hash 764931548, now seen corresponding path program 2 times [2020-10-13 13:06:19,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:06:19,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960589660] [2020-10-13 13:06:19,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:06:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:19,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:19,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:19,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:19,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 13:06:19,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:06:19,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-13 13:06:19,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:06:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:06:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:06:19,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:19,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:06:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:19,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:19,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:19,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:06:19,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:19,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:06:19,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:19,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:06:19,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:06:19,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:19,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:06:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:19,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:19,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:19,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:06:19,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:20,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 13:06:20,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:20,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:06:20,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:06:20,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:06:20,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:20,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:20,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:20,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:20,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:06:20,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:20,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 13:06:20,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:20,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:06:20,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:06:20,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:20,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:20,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:20,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:20,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:06:20,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:20,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:06:20,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:20,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:06:20,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:20,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:06:20,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 13:06:20,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960589660] [2020-10-13 13:06:20,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:06:20,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:06:20,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423291521] [2020-10-13 13:06:20,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:06:20,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:06:20,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:06:20,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:06:20,116 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 8 states. [2020-10-13 13:06:20,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:06:20,194 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-10-13 13:06:20,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:06:20,195 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-13 13:06:20,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:06:20,197 INFO L225 Difference]: With dead ends: 28 [2020-10-13 13:06:20,197 INFO L226 Difference]: Without dead ends: 24 [2020-10-13 13:06:20,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:06:20,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-13 13:06:20,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-13 13:06:20,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-13 13:06:20,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-13 13:06:20,204 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2020-10-13 13:06:20,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:06:20,205 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-13 13:06:20,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:06:20,206 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-13 13:06:20,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 13:06:20,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:06:20,207 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:06:20,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:06:20,208 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:06:20,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:06:20,208 INFO L82 PathProgramCache]: Analyzing trace with hash 601942852, now seen corresponding path program 3 times [2020-10-13 13:06:20,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:06:20,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380604010] [2020-10-13 13:06:20,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:06:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:20,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:20,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:20,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:20,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 13:06:20,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:06:20,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-13 13:06:20,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:06:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:06:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:06:20,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:20,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:06:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:20,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:20,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:20,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:06:20,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:20,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:06:20,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:20,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:06:20,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:20,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:06:20,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:20,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:06:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:20,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:20,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:20,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:06:20,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:20,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 13:06:20,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:20,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:06:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:06:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:06:20,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:20,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:20,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:20,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:20,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:06:20,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:20,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 13:06:20,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:06:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:06:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:20,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:20,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:20,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:20,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:06:20,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:20,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:06:20,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:20,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:06:20,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:20,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:06:20,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:20,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:20,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:20,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:20,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:06:20,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:20,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:06:20,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:20,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:06:20,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:06:20,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:20,809 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 13:06:20,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380604010] [2020-10-13 13:06:20,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:06:20,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:06:20,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300684360] [2020-10-13 13:06:20,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:06:20,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:06:20,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:06:20,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:06:20,811 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2020-10-13 13:06:20,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:06:20,888 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-10-13 13:06:20,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:06:20,889 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-13 13:06:20,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:06:20,890 INFO L225 Difference]: With dead ends: 31 [2020-10-13 13:06:20,890 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 13:06:20,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:06:20,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 13:06:20,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-13 13:06:20,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 13:06:20,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-13 13:06:20,898 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2020-10-13 13:06:20,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:06:20,898 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-13 13:06:20,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:06:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-13 13:06:20,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 13:06:20,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:06:20,900 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:06:20,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:06:20,901 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:06:20,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:06:20,901 INFO L82 PathProgramCache]: Analyzing trace with hash -183109604, now seen corresponding path program 4 times [2020-10-13 13:06:20,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:06:20,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851180433] [2020-10-13 13:06:20,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:06:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:20,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:21,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:21,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:21,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:06:21,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:06:21,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-13 13:06:21,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:21,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:06:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:06:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:06:21,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:21,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:06:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:21,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:21,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:21,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:06:21,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:21,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:06:21,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:21,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:06:21,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:21,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:06:21,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:21,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:06:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:21,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:21,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:21,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:06:21,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:21,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 13:06:21,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:21,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:06:21,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:06:21,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:06:21,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:21,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:21,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:21,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:21,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:06:21,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:21,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 13:06:21,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:06:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:06:21,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:21,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:21,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:21,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:21,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:06:21,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:21,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 13:06:21,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:06:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:06:21,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:21,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:21,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:21,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:21,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:06:21,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:21,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:06:21,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:06:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:21,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:06:21,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:21,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:21,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:21,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:21,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:06:21,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:21,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 13:06:21,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:21,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:06:21,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:21,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:06:21,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 13:06:21,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851180433] [2020-10-13 13:06:21,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:06:21,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:06:21,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475990603] [2020-10-13 13:06:21,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:06:21,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:06:21,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:06:21,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:06:21,818 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 11 states. [2020-10-13 13:06:21,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:06:21,947 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-10-13 13:06:21,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:06:21,948 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-13 13:06:21,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:06:21,949 INFO L225 Difference]: With dead ends: 34 [2020-10-13 13:06:21,949 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 13:06:21,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:06:21,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 13:06:21,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-13 13:06:21,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-13 13:06:21,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-10-13 13:06:21,959 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2020-10-13 13:06:21,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:06:21,959 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-10-13 13:06:21,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:06:21,960 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-10-13 13:06:21,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 13:06:21,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:06:21,961 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:06:21,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:06:21,962 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:06:21,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:06:21,962 INFO L82 PathProgramCache]: Analyzing trace with hash -155447420, now seen corresponding path program 5 times [2020-10-13 13:06:21,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:06:21,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254905703] [2020-10-13 13:06:21,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:06:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:21,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:22,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:22,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:22,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 13:06:22,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:06:22,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-10-13 13:06:22,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:22,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:06:22,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:06:22,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:06:22,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:22,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:06:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:22,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:22,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:22,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:06:22,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:22,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:06:22,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:06:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:22,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:06:22,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:22,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:06:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:22,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:22,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:22,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:06:22,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:22,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-13 13:06:22,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:06:22,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:06:22,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 13:06:22,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:22,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:22,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:22,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:22,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:06:22,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:22,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 13:06:22,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:22,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:06:22,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:22,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:06:22,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:22,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:22,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:22,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:22,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:06:22,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:22,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 13:06:22,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:06:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:22,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:06:22,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:22,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:22,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:22,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:22,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:06:22,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:22,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 13:06:22,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:22,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:06:22,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:22,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:06:22,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:22,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:22,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:23,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:23,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:06:23,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:23,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:06:23,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:06:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:06:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:23,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:23,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:23,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:23,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:06:23,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:23,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:06:23,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:06:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:06:23,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 46 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-13 13:06:23,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254905703] [2020-10-13 13:06:23,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:06:23,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:06:23,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598349675] [2020-10-13 13:06:23,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:06:23,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:06:23,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:06:23,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:06:23,098 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-10-13 13:06:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:06:23,221 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-10-13 13:06:23,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:06:23,222 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-10-13 13:06:23,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:06:23,225 INFO L225 Difference]: With dead ends: 37 [2020-10-13 13:06:23,225 INFO L226 Difference]: Without dead ends: 33 [2020-10-13 13:06:23,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:06:23,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-13 13:06:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-13 13:06:23,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 13:06:23,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-10-13 13:06:23,236 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2020-10-13 13:06:23,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:06:23,237 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-10-13 13:06:23,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:06:23,237 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-10-13 13:06:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 13:06:23,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:06:23,241 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:06:23,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:06:23,241 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:06:23,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:06:23,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1716183644, now seen corresponding path program 6 times [2020-10-13 13:06:23,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:06:23,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218488730] [2020-10-13 13:06:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:06:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:23,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:23,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:23,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:23,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 13:06:23,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:06:23,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-13 13:06:23,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:06:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:06:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 13:06:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:23,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:06:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:23,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:23,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:23,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:06:23,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:23,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:06:23,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:23,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:06:23,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:06:23,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:23,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:06:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:23,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:23,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:23,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:06:23,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:23,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-13 13:06:23,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:06:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:06:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 13:06:23,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:23,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:23,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:24,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:24,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:06:24,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:24,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-13 13:06:24,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:06:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:24,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:06:24,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:24,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:24,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:24,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:24,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:06:24,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:24,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 13:06:24,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:06:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:06:24,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:24,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:24,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:24,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:24,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:06:24,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:24,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 13:06:24,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:24,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:06:24,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:24,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:06:24,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:24,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:24,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:24,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:24,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:06:24,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:24,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 13:06:24,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:06:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:06:24,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:24,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:24,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:24,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:24,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:06:24,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:24,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:06:24,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:06:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:24,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:06:24,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:24,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:24,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:24,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:24,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:06:24,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:24,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:06:24,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:06:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:06:24,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 6 proven. 69 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 13:06:24,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218488730] [2020-10-13 13:06:24,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:06:24,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 13:06:24,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5920586] [2020-10-13 13:06:24,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:06:24,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:06:24,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:06:24,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:06:24,585 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 12 states. [2020-10-13 13:06:24,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:06:24,731 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-10-13 13:06:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:06:24,732 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-13 13:06:24,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:06:24,734 INFO L225 Difference]: With dead ends: 40 [2020-10-13 13:06:24,734 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 13:06:24,737 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 [2020-10-13 13:06:24,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 13:06:24,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-13 13:06:24,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-13 13:06:24,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-10-13 13:06:24,747 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2020-10-13 13:06:24,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:06:24,749 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-10-13 13:06:24,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:06:24,750 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-10-13 13:06:24,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 13:06:24,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:06:24,753 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:06:24,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:06:24,753 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:06:24,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:06:24,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1079602236, now seen corresponding path program 7 times [2020-10-13 13:06:24,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:06:24,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922298668] [2020-10-13 13:06:24,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:06:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:24,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:24,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:25,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:25,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 13:06:25,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:06:25,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-13 13:06:25,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:25,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 13:06:25,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:06:25,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 13:06:25,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:25,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:06:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:25,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:25,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:25,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:06:25,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:25,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:06:25,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:06:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:06:25,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:25,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:06:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:25,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:25,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:25,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:06:25,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:25,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-13 13:06:25,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 13:06:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:06:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 13:06:25,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:25,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:25,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:25,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:25,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:06:25,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:25,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-13 13:06:25,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:06:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:06:25,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:25,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:26,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:26,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:26,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:06:26,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:26,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-13 13:06:26,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:26,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:06:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:06:26,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:26,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:26,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:26,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:26,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:06:26,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:26,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 13:06:26,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:26,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:06:26,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:26,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:06:26,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:26,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:26,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:26,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:26,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:06:26,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:26,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 13:06:26,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:06:26,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:26,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:06:26,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:26,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:26,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:26,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:26,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:06:26,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:26,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 13:06:26,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:26,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:06:26,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:26,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:06:26,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:26,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:26,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:26,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:26,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:06:26,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:26,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:06:26,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:26,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:06:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:06:26,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:26,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:26,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:26,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:26,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:06:26,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:26,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:06:26,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:06:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:06:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 18 proven. 86 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-13 13:06:26,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922298668] [2020-10-13 13:06:26,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:06:26,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:06:26,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508172030] [2020-10-13 13:06:26,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:06:26,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:06:26,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:06:26,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:06:26,554 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 13 states. [2020-10-13 13:06:26,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:06:26,703 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-10-13 13:06:26,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:06:26,704 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-10-13 13:06:26,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:06:26,705 INFO L225 Difference]: With dead ends: 43 [2020-10-13 13:06:26,706 INFO L226 Difference]: Without dead ends: 39 [2020-10-13 13:06:26,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-10-13 13:06:26,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-13 13:06:26,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-13 13:06:26,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 13:06:26,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-10-13 13:06:26,722 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2020-10-13 13:06:26,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:06:26,723 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-10-13 13:06:26,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:06:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-10-13 13:06:26,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 13:06:26,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:06:26,725 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:06:26,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:06:26,727 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:06:26,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:06:26,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1035381916, now seen corresponding path program 8 times [2020-10-13 13:06:26,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:06:26,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657534331] [2020-10-13 13:06:26,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:06:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:26,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:27,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:27,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:27,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 13:06:27,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:06:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-10-13 13:06:27,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 13:06:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:06:27,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 13:06:27,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:27,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:06:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:27,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:27,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:27,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:06:27,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:27,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:06:27,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:06:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:06:27,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:27,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:06:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:27,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:27,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:27,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 13:06:27,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:27,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-13 13:06:27,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:27,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 13:06:27,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:06:27,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 13:06:27,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:27,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:27,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:27,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:27,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:06:27,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:27,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-13 13:06:27,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:27,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 13:06:27,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:27,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:06:27,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:27,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:27,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:28,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:28,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:06:28,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:28,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-13 13:06:28,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:28,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:06:28,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:28,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:06:28,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:28,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:28,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:28,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:28,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:06:28,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:28,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 13:06:28,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:28,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:06:28,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:28,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:06:28,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:28,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:28,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:28,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:28,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:06:28,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:28,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 13:06:28,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:28,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:06:28,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:28,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:06:28,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:28,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:28,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:28,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:28,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:06:28,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:28,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 13:06:28,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:06:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:06:28,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:28,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:28,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:28,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:28,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:06:28,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:28,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:06:28,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:28,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:06:28,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:28,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:06:28,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:28,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:28,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:28,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:28,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:06:28,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:28,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:06:28,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:06:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:28,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:06:28,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:28,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:28,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:28,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:28,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:06:28,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:28,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:06:28,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:06:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:06:28,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:28,718 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 19 proven. 116 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-13 13:06:28,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657534331] [2020-10-13 13:06:28,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:06:28,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 13:06:28,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440203304] [2020-10-13 13:06:28,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:06:28,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:06:28,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:06:28,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:06:28,726 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 14 states. [2020-10-13 13:06:28,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:06:28,884 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-10-13 13:06:28,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:06:28,885 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-10-13 13:06:28,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:06:28,886 INFO L225 Difference]: With dead ends: 46 [2020-10-13 13:06:28,887 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 13:06:28,889 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 [2020-10-13 13:06:28,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 13:06:28,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-13 13:06:28,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-13 13:06:28,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-10-13 13:06:28,896 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2020-10-13 13:06:28,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:06:28,896 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-10-13 13:06:28,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:06:28,896 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-10-13 13:06:28,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 13:06:28,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:06:28,897 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:06:28,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:06:28,897 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:06:28,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:06:28,898 INFO L82 PathProgramCache]: Analyzing trace with hash 952137732, now seen corresponding path program 9 times [2020-10-13 13:06:28,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:06:28,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866141628] [2020-10-13 13:06:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:06:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:28,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:29,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:29,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:29,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 13:06:29,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:06:29,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-10-13 13:06:29,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:29,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 13:06:29,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:06:29,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 13:06:29,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:29,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:06:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:29,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:29,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:29,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:06:29,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:29,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:06:29,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:29,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:06:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:06:29,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:29,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:06:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:29,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:30,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:30,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 13:06:30,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:30,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-13 13:06:30,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 13:06:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:06:30,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 13:06:30,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:30,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:30,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:30,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:30,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 13:06:30,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:30,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-13 13:06:30,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:30,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 13:06:30,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:30,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 13:06:30,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:30,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:30,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:30,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:30,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:06:30,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:30,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-13 13:06:30,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 13:06:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:06:30,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:30,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:31,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:31,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:31,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:06:31,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:31,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-13 13:06:31,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:31,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:06:31,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:31,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:06:31,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:31,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:31,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:31,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:31,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:06:31,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:31,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 13:06:31,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:06:31,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:31,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:06:31,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:31,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:31,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:31,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:31,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:06:31,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:31,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 13:06:31,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:06:31,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:31,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:06:31,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:31,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:31,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:31,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:31,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:06:31,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:31,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 13:06:31,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:06:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:06:31,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:31,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:31,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:31,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:31,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:06:31,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:31,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 13:06:31,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:31,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:06:31,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:31,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:06:31,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:31,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:31,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:31,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:31,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:06:31,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:31,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:06:31,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:06:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:06:31,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:31,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:31,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:31,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:31,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:06:31,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:31,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:06:31,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:31,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:06:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:06:31,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:31,799 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 16 proven. 142 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-13 13:06:31,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866141628] [2020-10-13 13:06:31,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:06:31,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 13:06:31,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752698815] [2020-10-13 13:06:31,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 13:06:31,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:06:31,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 13:06:31,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:06:31,803 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 16 states. [2020-10-13 13:06:32,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:06:32,016 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-10-13 13:06:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:06:32,017 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2020-10-13 13:06:32,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:06:32,018 INFO L225 Difference]: With dead ends: 49 [2020-10-13 13:06:32,018 INFO L226 Difference]: Without dead ends: 45 [2020-10-13 13:06:32,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2020-10-13 13:06:32,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-13 13:06:32,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-13 13:06:32,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 13:06:32,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-10-13 13:06:32,033 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2020-10-13 13:06:32,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:06:32,034 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-10-13 13:06:32,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 13:06:32,034 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-10-13 13:06:32,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 13:06:32,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:06:32,038 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:06:32,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:06:32,038 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:06:32,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:06:32,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1540970204, now seen corresponding path program 10 times [2020-10-13 13:06:32,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:06:32,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545075594] [2020-10-13 13:06:32,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:06:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:32,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:32,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:32,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 13:06:32,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:32,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-10-13 13:06:32,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:32,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-13 13:06:32,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 13:06:32,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 13:06:32,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:33,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:06:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:33,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:33,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:33,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:06:33,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:33,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:06:33,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:33,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:06:33,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:33,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:06:33,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:33,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:06:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:33,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:33,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:33,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 13:06:33,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:33,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 946 [2020-10-13 13:06:33,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:33,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-13 13:06:33,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:33,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 13:06:33,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:34,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:34,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:34,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:34,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 13:06:34,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:34,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-10-13 13:06:34,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-13 13:06:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 13:06:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:34,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:34,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:35,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:35,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 13:06:35,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:35,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-13 13:06:35,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-13 13:06:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:35,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 13:06:35,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:35,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:35,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:35,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:35,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:06:35,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:35,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-13 13:06:35,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:35,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-13 13:06:35,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:35,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:06:35,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:35,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:35,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:36,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:36,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:06:36,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:36,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-13 13:06:36,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:36,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 13:06:36,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:36,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:06:36,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:36,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:36,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:36,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:36,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:06:36,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:36,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-13 13:06:36,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 13:06:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:36,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:06:36,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:36,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:36,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:36,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:06:36,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:36,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-13 13:06:36,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 13:06:36,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:36,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:06:36,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:36,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:36,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:36,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:36,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:06:36,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:36,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 13:06:36,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:36,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 13:06:36,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:36,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:06:36,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:36,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:36,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:36,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:36,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:06:36,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:36,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 13:06:36,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:36,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:06:36,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:36,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:06:36,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:06:36,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:36,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:36,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:36,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:06:36,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:36,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 13:06:36,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:36,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:06:36,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:36,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:06:36,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:06:36,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:36,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:36,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:36,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:06:36,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:36,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:06:36,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:36,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:06:36,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:36,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:06:36,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:36,991 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 34 proven. 18 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2020-10-13 13:06:36,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545075594] [2020-10-13 13:06:36,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:06:36,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:06:36,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901172973] [2020-10-13 13:06:36,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:06:36,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:06:36,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:06:36,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:06:36,996 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 8 states. [2020-10-13 13:06:37,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:06:37,088 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2020-10-13 13:06:37,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:06:37,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-10-13 13:06:37,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:06:37,090 INFO L225 Difference]: With dead ends: 45 [2020-10-13 13:06:37,090 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 13:06:37,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:06:37,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 13:06:37,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 13:06:37,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 13:06:37,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 13:06:37,093 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2020-10-13 13:06:37,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:06:37,093 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 13:06:37,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:06:37,093 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 13:06:37,093 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 13:06:37,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:06:37,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-13 13:06:37,147 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-13 13:06:37,147 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-13 13:06:37,148 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-13 13:06:37,148 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-13 13:06:37,148 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-13 13:06:37,148 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-13 13:06:37,148 INFO L268 CegarLoopResult]: For program point sumEXIT(lines 3 9) no Hoare annotation was computed. [2020-10-13 13:06:37,148 INFO L264 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|)) [2020-10-13 13:06:37,148 INFO L268 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-13 13:06:37,148 INFO L268 CegarLoopResult]: For program point L4(lines 4 8) no Hoare annotation was computed. [2020-10-13 13:06:37,149 INFO L268 CegarLoopResult]: For program point sumFINAL(lines 3 9) no Hoare annotation was computed. [2020-10-13 13:06:37,149 INFO L271 CegarLoopResult]: At program point sumENTRY(lines 3 9) the Hoare annotation is: true [2020-10-13 13:06:37,149 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-10-13 13:06:37,149 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2020-10-13 13:06:37,149 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2020-10-13 13:06:37,149 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-10-13 13:06:37,149 INFO L268 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-10-13 13:06:37,150 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= main_~a~0 10) [2020-10-13 13:06:37,150 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-10-13 13:06:37,150 INFO L268 CegarLoopResult]: For program point L15-2(lines 11 18) no Hoare annotation was computed. [2020-10-13 13:06:37,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:06:37 BoogieIcfgContainer [2020-10-13 13:06:37,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 13:06:37,162 INFO L168 Benchmark]: Toolchain (without parser) took 19344.99 ms. Allocated memory was 148.4 MB in the beginning and 449.3 MB in the end (delta: 300.9 MB). Free memory was 104.5 MB in the beginning and 185.5 MB in the end (delta: -80.9 MB). Peak memory consumption was 220.0 MB. Max. memory is 7.1 GB. [2020-10-13 13:06:37,163 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 148.4 MB. Free memory was 123.1 MB in the beginning and 122.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-13 13:06:37,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.64 ms. Allocated memory is still 148.4 MB. Free memory was 104.1 MB in the beginning and 94.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-10-13 13:06:37,170 INFO L168 Benchmark]: Boogie Preprocessor took 29.52 ms. Allocated memory is still 148.4 MB. Free memory was 94.8 MB in the beginning and 93.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-13 13:06:37,171 INFO L168 Benchmark]: RCFGBuilder took 340.13 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 93.5 MB in the beginning and 172.8 MB in the end (delta: -79.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-10-13 13:06:37,172 INFO L168 Benchmark]: TraceAbstraction took 18731.72 ms. Allocated memory was 205.0 MB in the beginning and 449.3 MB in the end (delta: 244.3 MB). Free memory was 171.9 MB in the beginning and 185.5 MB in the end (delta: -13.6 MB). Peak memory consumption was 230.7 MB. Max. memory is 7.1 GB. [2020-10-13 13:06:37,183 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 148.4 MB. Free memory was 123.1 MB in the beginning and 122.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 235.64 ms. Allocated memory is still 148.4 MB. Free memory was 104.1 MB in the beginning and 94.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.52 ms. Allocated memory is still 148.4 MB. Free memory was 94.8 MB in the beginning and 93.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 340.13 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 93.5 MB in the beginning and 172.8 MB in the end (delta: -79.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18731.72 ms. Allocated memory was 205.0 MB in the beginning and 449.3 MB in the end (delta: 244.3 MB). Free memory was 171.9 MB in the beginning and 185.5 MB in the end (delta: -13.6 MB). Peak memory consumption was 230.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.5s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 132 SDtfs, 247 SDslu, 501 SDs, 0 SdLazy, 391 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 321 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 15 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 16.5s InterpolantComputationTime, 473 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 462 ConstructedInterpolants, 0 QuantifiedInterpolants, 91146 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 672/1210 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...