/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_20x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:55:44,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:55:44,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:55:44,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:55:44,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:55:44,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:55:44,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:55:44,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:55:44,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:55:44,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:55:44,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:55:44,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:55:44,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:55:44,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:55:44,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:55:44,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:55:44,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:55:44,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:55:44,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:55:44,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:55:44,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:55:44,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:55:44,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:55:44,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:55:44,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:55:44,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:55:44,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:55:44,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:55:44,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:55:44,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:55:44,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:55:44,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:55:44,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:55:44,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:55:44,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:55:44,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:55:44,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:55:44,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:55:44,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:55:44,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:55:44,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:55:44,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:55:44,528 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:55:44,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:55:44,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:55:44,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:55:44,531 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:55:44,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:55:44,532 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:55:44,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:55:44,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:55:44,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:55:44,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:55:44,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:55:44,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:55:44,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:55:44,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:55:44,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:55:44,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:55:44,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:55:44,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:55:44,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:55:44,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:55:44,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:55:44,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:55:44,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:55:44,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:55:44,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:55:44,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:55:44,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:55:44,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:55:44,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 00:55:45,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:55:45,022 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:55:45,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:55:45,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:55:45,027 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:55:45,028 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_20x0-1.c [2020-09-25 00:55:45,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3377e5232/383f7e8ca10942d9b70d109988ed4bc9/FLAG1131f4ef2 [2020-09-25 00:55:45,602 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:55:45,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_20x0-1.c [2020-09-25 00:55:45,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3377e5232/383f7e8ca10942d9b70d109988ed4bc9/FLAG1131f4ef2 [2020-09-25 00:55:45,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3377e5232/383f7e8ca10942d9b70d109988ed4bc9 [2020-09-25 00:55:45,978 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:55:45,984 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:55:45,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:55:45,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:55:45,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:55:45,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:55:45" (1/1) ... [2020-09-25 00:55:45,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b47f15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:45, skipping insertion in model container [2020-09-25 00:55:45,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:55:45" (1/1) ... [2020-09-25 00:55:46,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:55:46,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:55:46,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:55:46,299 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:55:46,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:55:46,329 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:55:46,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:46 WrapperNode [2020-09-25 00:55:46,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:55:46,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:55:46,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:55:46,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:55:46,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:46" (1/1) ... [2020-09-25 00:55:46,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:46" (1/1) ... [2020-09-25 00:55:46,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:46" (1/1) ... [2020-09-25 00:55:46,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:46" (1/1) ... [2020-09-25 00:55:46,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:46" (1/1) ... [2020-09-25 00:55:46,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:46" (1/1) ... [2020-09-25 00:55:46,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:46" (1/1) ... [2020-09-25 00:55:46,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:55:46,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:55:46,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:55:46,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:55:46,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:55:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:55:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:55:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-25 00:55:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:55:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:55:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-25 00:55:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:55:46,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:55:46,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:55:46,727 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:55:46,727 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:55:46,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:55:46 BoogieIcfgContainer [2020-09-25 00:55:46,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:55:46,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:55:46,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:55:46,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:55:46,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:55:45" (1/3) ... [2020-09-25 00:55:46,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da6d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:55:46, skipping insertion in model container [2020-09-25 00:55:46,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:46" (2/3) ... [2020-09-25 00:55:46,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da6d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:55:46, skipping insertion in model container [2020-09-25 00:55:46,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:55:46" (3/3) ... [2020-09-25 00:55:46,771 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_20x0-1.c [2020-09-25 00:55:46,797 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:55:46,820 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:55:46,844 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:55:46,873 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:55:46,874 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:55:46,874 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:55:46,874 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:55:46,874 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:55:46,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:55:46,874 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:55:46,875 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:55:46,893 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 00:55:46,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 00:55:46,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:46,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:46,902 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:46,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:46,909 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-25 00:55:46,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:46,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477577233] [2020-09-25 00:55:46,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:47,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:47,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:47,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:47,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 00:55:47,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:47,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 00:55:47,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:47,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:55:47,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:55:47,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:55:47,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 00:55:47,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:47,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:47,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:47,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:47,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:47,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:55:47,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:47,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:47,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:55:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:47,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:47,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:47,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:47,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:47,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 00:55:47,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:47,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:55:47,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:55:47,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:55:47,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:55:47,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477577233] [2020-09-25 00:55:47,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:55:47,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:55:47,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988503110] [2020-09-25 00:55:47,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:55:47,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:47,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:55:47,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:55:47,466 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-25 00:55:47,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:47,570 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-25 00:55:47,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:55:47,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 00:55:47,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:47,586 INFO L225 Difference]: With dead ends: 39 [2020-09-25 00:55:47,586 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 00:55:47,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:55:47,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 00:55:47,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-25 00:55:47,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 00:55:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-25 00:55:47,641 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-25 00:55:47,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:47,641 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-25 00:55:47,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:55:47,642 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-25 00:55:47,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 00:55:47,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:47,645 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:47,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:55:47,645 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:47,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:47,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-25 00:55:47,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:47,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498547433] [2020-09-25 00:55:47,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:47,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:47,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:48,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:48,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 00:55:48,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:48,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-09-25 00:55:48,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:48,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:55:48,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:55:48,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 00:55:48,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:48,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:48,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:48,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:48,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:48,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:48,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:55:48,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:48,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:48,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:48,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:48,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:48,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:55:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:48,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:48,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:48,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:48,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 00:55:48,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:48,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 00:55:48,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:48,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:55:48,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:55:48,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 00:55:48,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:48,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:48,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:48,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:48,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:48,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:48,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 00:55:48,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:48,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:55:48,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 00:55:48,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498547433] [2020-09-25 00:55:48,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:48,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:55:48,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547625462] [2020-09-25 00:55:48,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:55:48,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:48,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:55:48,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:55:48,564 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 9 states. [2020-09-25 00:55:48,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:48,658 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-25 00:55:48,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:55:48,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-25 00:55:48,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:48,660 INFO L225 Difference]: With dead ends: 36 [2020-09-25 00:55:48,661 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 00:55:48,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:55:48,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 00:55:48,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 00:55:48,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 00:55:48,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 00:55:48,669 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-25 00:55:48,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:48,670 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 00:55:48,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:55:48,670 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 00:55:48,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 00:55:48,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:48,672 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:48,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:55:48,672 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:48,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:48,673 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-25 00:55:48,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:48,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386959694] [2020-09-25 00:55:48,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:48,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:48,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:49,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:49,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 00:55:49,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:49,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-09-25 00:55:49,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:49,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:55:49,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:55:49,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 00:55:49,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:49,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:49,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:49,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:49,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:49,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:49,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:49,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:49,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:49,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:55:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:49,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:49,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:49,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:55:49,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:49,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 00:55:49,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:49,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:55:49,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:55:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:55:49,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:49,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:49,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:49,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:49,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 00:55:49,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 00:55:49,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 00:55:49,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:55:49,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:49,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:49,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:49,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:49,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:49,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 00:55:49,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:49,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:49,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:55:49,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 00:55:49,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386959694] [2020-09-25 00:55:49,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:49,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:55:49,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112815392] [2020-09-25 00:55:49,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:55:49,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:49,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:55:49,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:55:49,534 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2020-09-25 00:55:49,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:49,640 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-09-25 00:55:49,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 00:55:49,642 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-25 00:55:49,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:49,643 INFO L225 Difference]: With dead ends: 41 [2020-09-25 00:55:49,643 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 00:55:49,645 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 [2020-09-25 00:55:49,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 00:55:49,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-25 00:55:49,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 00:55:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-25 00:55:49,661 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-09-25 00:55:49,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:49,662 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-25 00:55:49,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:55:49,662 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-25 00:55:49,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 00:55:49,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:49,667 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:49,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:55:49,667 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:49,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:49,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-09-25 00:55:49,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:49,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616331485] [2020-09-25 00:55:49,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:49,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:49,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:50,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:50,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 00:55:50,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:50,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-09-25 00:55:50,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:55:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:55:50,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 00:55:50,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:50,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:50,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:50,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:50,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:50,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:50,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:55:50,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:50,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:50,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:50,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:50,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:50,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:55:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:50,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:50,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:50,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 00:55:50,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:50,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 00:55:50,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:55:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:55:50,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 00:55:50,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:50,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:50,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:50,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:50,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:55:50,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:50,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 00:55:50,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:50,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:50,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:50,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 00:55:50,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:50,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:50,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:50,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:50,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 00:55:50,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:50,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 00:55:50,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:50,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:50,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:50,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 00:55:50,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:51,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:51,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:51,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:51,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:51,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:51,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 00:55:51,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:51,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:51,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:51,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:55:51,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 00:55:51,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616331485] [2020-09-25 00:55:51,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:51,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:55:51,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193631243] [2020-09-25 00:55:51,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:55:51,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:51,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:55:51,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:55:51,070 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states. [2020-09-25 00:55:51,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:51,170 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-25 00:55:51,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:55:51,172 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 00:55:51,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:51,174 INFO L225 Difference]: With dead ends: 46 [2020-09-25 00:55:51,174 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 00:55:51,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:55:51,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 00:55:51,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 00:55:51,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 00:55:51,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-25 00:55:51,189 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-09-25 00:55:51,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:51,191 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-25 00:55:51,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:55:51,192 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-25 00:55:51,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 00:55:51,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:51,193 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:51,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:55:51,197 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:51,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:51,197 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-09-25 00:55:51,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:51,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22650773] [2020-09-25 00:55:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:51,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:51,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:53,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:53,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 00:55:53,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:53,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2028 [2020-09-25 00:55:53,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:53,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:55:53,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:55:53,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 00:55:53,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:53,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:53,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:53,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:53,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:53,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:53,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:53,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:53,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:53,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:53,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:53,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:53,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:55:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:53,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:53,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:53,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 00:55:53,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:53,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-25 00:55:53,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:53,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:55:53,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:55:53,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 00:55:53,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:53,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:53,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:53,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:53,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 00:55:53,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:53,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 00:55:53,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:53,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:55:53,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:53,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:55:53,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:53,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:53,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:53,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:53,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:55:53,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:53,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 00:55:53,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:53,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:53,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:53,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 00:55:53,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:53,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:53,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:53,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:53,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 00:55:53,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:53,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 00:55:53,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:53,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:53,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:53,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 00:55:53,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:53,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:53,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:53,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:53,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:53,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:53,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 00:55:53,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:53,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:53,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:53,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:55:53,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:54,015 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 00:55:54,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22650773] [2020-09-25 00:55:54,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:54,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:55:54,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768252293] [2020-09-25 00:55:54,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:55:54,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:54,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:55:54,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:55:54,018 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 9 states. [2020-09-25 00:55:54,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:54,127 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 00:55:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 00:55:54,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-09-25 00:55:54,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:54,129 INFO L225 Difference]: With dead ends: 51 [2020-09-25 00:55:54,129 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 00:55:54,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:55:54,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 00:55:54,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 00:55:54,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 00:55:54,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-25 00:55:54,137 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-09-25 00:55:54,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:54,138 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-25 00:55:54,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:55:54,138 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-25 00:55:54,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 00:55:54,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:54,140 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:54,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:55:54,140 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:54,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:54,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-09-25 00:55:54,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:54,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852955341] [2020-09-25 00:55:54,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:54,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:54,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:58,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:58,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 00:55:58,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:58,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3956 [2020-09-25 00:55:58,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 00:55:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:55:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 00:55:58,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:58,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:58,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:58,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:58,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:58,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:58,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:58,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:58,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:58,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:55:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:58,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:58,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:58,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 00:55:58,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:58,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-25 00:55:58,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 00:55:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:55:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 00:55:58,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:58,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:58,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:58,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:58,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 00:55:58,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:58,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-09-25 00:55:58,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:58,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:55:58,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:58,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 00:55:58,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:58,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:58,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:58,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:58,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 00:55:58,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:58,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 00:55:58,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:55:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:55:58,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:58,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:58,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:59,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:59,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:55:59,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:59,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 00:55:59,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:59,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:59,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:59,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 00:55:59,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:59,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:59,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:59,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:59,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 00:55:59,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:59,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 00:55:59,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:59,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:59,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 00:55:59,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:59,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:55:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:59,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:59,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:59,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:55:59,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:59,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 00:55:59,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:55:59,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 72 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 00:55:59,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852955341] [2020-09-25 00:55:59,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:59,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:55:59,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883074382] [2020-09-25 00:55:59,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:55:59,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:59,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:55:59,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:55:59,176 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 11 states. [2020-09-25 00:55:59,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:59,316 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-09-25 00:55:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 00:55:59,316 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-25 00:55:59,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:59,319 INFO L225 Difference]: With dead ends: 56 [2020-09-25 00:55:59,319 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 00:55:59,320 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 [2020-09-25 00:55:59,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 00:55:59,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 00:55:59,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 00:55:59,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 00:55:59,332 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-09-25 00:55:59,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:59,333 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 00:55:59,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:55:59,333 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 00:55:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 00:55:59,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:59,338 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:59,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:55:59,338 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:59,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:59,339 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-09-25 00:55:59,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:59,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777800136] [2020-09-25 00:55:59,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:59,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:59,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:03,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:03,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-25 00:56:03,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:56:03,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4035 [2020-09-25 00:56:03,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:03,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 00:56:03,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:56:03,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 00:56:03,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:03,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:56:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:03,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:03,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:03,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:56:03,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:03,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:56:03,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:03,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:03,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:56:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:03,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:03,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:06,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:06,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 00:56:06,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:56:06,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2909 [2020-09-25 00:56:06,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 00:56:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:56:06,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 00:56:06,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:06,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:06,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:06,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:06,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 00:56:06,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:06,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-25 00:56:06,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:06,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:56:06,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:06,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 00:56:06,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:06,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:06,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:06,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:06,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 00:56:06,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:06,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 00:56:06,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:06,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:56:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 00:56:06,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:06,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:06,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:07,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:07,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 00:56:07,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:07,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 00:56:07,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:07,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:56:07,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:07,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:56:07,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:07,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:07,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:07,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:07,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:56:07,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:07,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 00:56:07,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:56:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 00:56:07,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:07,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:07,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:07,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:07,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 00:56:07,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:07,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 00:56:07,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:07,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:56:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 00:56:07,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:07,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:07,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:07,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:07,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:56:07,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:07,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 00:56:07,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:07,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:56:07,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:07,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:56:07,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 17 proven. 102 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-09-25 00:56:07,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777800136] [2020-09-25 00:56:07,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:56:07,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 00:56:07,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434025285] [2020-09-25 00:56:07,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 00:56:07,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:56:07,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 00:56:07,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:56:07,350 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 14 states. [2020-09-25 00:56:07,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:56:07,530 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-25 00:56:07,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 00:56:07,530 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-09-25 00:56:07,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:56:07,533 INFO L225 Difference]: With dead ends: 61 [2020-09-25 00:56:07,534 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 00:56:07,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-09-25 00:56:07,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 00:56:07,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 00:56:07,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 00:56:07,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-09-25 00:56:07,542 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-09-25 00:56:07,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:56:07,543 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-09-25 00:56:07,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 00:56:07,543 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-09-25 00:56:07,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 00:56:07,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:56:07,544 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:56:07,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:56:07,545 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:56:07,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:56:07,546 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-09-25 00:56:07,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:56:07,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390210067] [2020-09-25 00:56:07,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:56:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:07,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:07,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:12,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:12,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 00:56:12,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:56:12,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4913 [2020-09-25 00:56:12,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:12,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 00:56:12,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:56:12,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 00:56:12,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:12,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:56:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:12,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:12,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:12,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:56:12,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:12,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:56:12,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:12,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:12,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:12,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:12,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:12,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:56:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:12,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:12,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:12,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 00:56:12,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:12,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-09-25 00:56:12,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:12,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 00:56:12,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:56:12,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 00:56:12,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:12,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:12,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:13,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:13,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 00:56:13,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:13,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-25 00:56:13,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:13,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:56:13,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:13,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 00:56:13,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:13,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:13,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:13,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:13,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 00:56:13,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:13,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-25 00:56:13,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:56:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 00:56:13,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:13,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:13,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:13,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:13,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 00:56:13,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:13,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-25 00:56:13,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:56:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 00:56:13,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:13,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:13,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:13,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:13,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 00:56:13,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:13,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 00:56:13,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:56:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:56:13,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:13,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:14,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:14,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:56:14,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:14,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 00:56:14,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:14,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:56:14,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:14,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 00:56:14,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:14,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:14,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:14,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:14,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 00:56:14,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:14,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 00:56:14,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:56:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 00:56:14,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:14,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:14,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:14,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:14,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:56:14,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:14,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 00:56:14,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:56:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:14,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:56:14,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 15 proven. 149 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 00:56:14,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390210067] [2020-09-25 00:56:14,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:56:14,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 00:56:14,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143521237] [2020-09-25 00:56:14,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 00:56:14,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:56:14,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 00:56:14,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:56:14,238 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 14 states. [2020-09-25 00:56:14,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:56:14,364 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-09-25 00:56:14,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:56:14,365 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2020-09-25 00:56:14,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:56:14,366 INFO L225 Difference]: With dead ends: 66 [2020-09-25 00:56:14,366 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 00:56:14,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=303, Unknown=0, NotChecked=0, Total=462 [2020-09-25 00:56:14,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 00:56:14,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 00:56:14,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 00:56:14,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 00:56:14,374 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-09-25 00:56:14,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:56:14,375 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 00:56:14,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 00:56:14,375 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 00:56:14,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 00:56:14,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:56:14,376 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:56:14,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:56:14,377 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:56:14,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:56:14,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-09-25 00:56:14,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:56:14,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121257646] [2020-09-25 00:56:14,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:56:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:14,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:14,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:19,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:19,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 00:56:19,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:56:19,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 00:56:19,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:19,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-25 00:56:19,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:56:19,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 00:56:19,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:19,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:56:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:19,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:19,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:19,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:56:19,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:19,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:56:19,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:19,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:19,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:19,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:19,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:19,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:56:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:19,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:19,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:23,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:23,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 00:56:23,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:56:23,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4476 [2020-09-25 00:56:23,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:23,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 00:56:23,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:56:23,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 00:56:23,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:23,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:23,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:24,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:24,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 00:56:24,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:24,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-09-25 00:56:24,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 00:56:24,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:24,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 00:56:24,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:24,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:24,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:24,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:24,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 00:56:24,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:24,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-09-25 00:56:24,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:56:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 00:56:24,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:24,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:24,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:24,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:24,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 00:56:24,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:24,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-09-25 00:56:24,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:24,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:56:24,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:24,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 00:56:24,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:24,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:25,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:25,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:25,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 00:56:25,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:25,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 00:56:25,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:56:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 00:56:25,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:25,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:25,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:25,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:25,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 00:56:25,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:25,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 00:56:25,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:56:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:56:25,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:25,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:25,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:25,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:25,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:56:25,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 00:56:25,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:56:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 00:56:25,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:25,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:25,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:25,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:25,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 00:56:25,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:25,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 00:56:25,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:25,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:56:25,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:25,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 00:56:25,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:25,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:25,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:25,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:25,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:56:25,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:25,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:56:25,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:25,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:56:25,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:25,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:56:25,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 42 proven. 162 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-09-25 00:56:25,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121257646] [2020-09-25 00:56:25,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:56:25,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 00:56:25,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025669267] [2020-09-25 00:56:25,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 00:56:25,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:56:25,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 00:56:25,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:56:25,629 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 16 states. [2020-09-25 00:56:25,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:56:25,877 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 00:56:25,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 00:56:25,878 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2020-09-25 00:56:25,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:56:25,879 INFO L225 Difference]: With dead ends: 71 [2020-09-25 00:56:25,880 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 00:56:25,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-09-25 00:56:25,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 00:56:25,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 00:56:25,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 00:56:25,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-09-25 00:56:25,887 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-09-25 00:56:25,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:56:25,888 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-09-25 00:56:25,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 00:56:25,888 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-09-25 00:56:25,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 00:56:25,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:56:25,889 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:56:25,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:56:25,890 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:56:25,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:56:25,890 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-09-25 00:56:25,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:56:25,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503696830] [2020-09-25 00:56:25,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:56:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:25,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:26,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:30,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:30,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 00:56:30,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:56:30,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 00:56:30,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:30,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-09-25 00:56:30,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:56:30,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 00:56:30,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:30,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:56:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:30,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:30,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:30,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:56:30,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:30,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:56:30,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:30,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:30,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:30,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:30,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:30,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:56:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:30,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:31,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:35,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:35,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 00:56:35,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:56:35,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 00:56:35,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:35,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 00:56:35,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:56:35,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 00:56:35,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:35,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:36,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:36,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:36,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 00:56:36,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:36,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-09-25 00:56:36,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:36,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 00:56:36,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:36,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 00:56:36,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:36,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:36,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:36,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:36,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 00:56:36,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:36,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-09-25 00:56:36,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 00:56:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 00:56:36,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:36,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:36,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:37,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:37,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 00:56:37,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:37,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-25 00:56:37,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:37,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:56:37,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:37,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 00:56:37,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:37,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:37,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:37,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:37,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 00:56:37,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:37,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 00:56:37,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:56:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 00:56:37,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:37,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:37,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:37,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:37,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 00:56:37,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:37,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 00:56:37,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:56:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 00:56:37,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:37,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:37,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:37,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:37,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 00:56:37,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:37,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 00:56:37,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:37,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:56:37,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:37,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:56:37,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:37,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:37,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:37,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:37,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:56:37,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:37,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 00:56:37,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:56:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 00:56:37,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:37,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:37,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:37,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:37,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 00:56:37,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:37,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 00:56:37,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:37,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:56:37,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:37,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 00:56:37,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:37,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:37,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:37,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:37,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:56:37,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:37,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:56:37,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:37,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:56:37,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:37,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:56:37,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 39 proven. 229 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-09-25 00:56:38,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503696830] [2020-09-25 00:56:38,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:56:38,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 00:56:38,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517608564] [2020-09-25 00:56:38,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 00:56:38,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:56:38,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 00:56:38,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:56:38,024 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 17 states. [2020-09-25 00:56:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:56:38,251 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-09-25 00:56:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 00:56:38,252 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 99 [2020-09-25 00:56:38,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:56:38,253 INFO L225 Difference]: With dead ends: 76 [2020-09-25 00:56:38,254 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 00:56:38,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=219, Invalid=483, Unknown=0, NotChecked=0, Total=702 [2020-09-25 00:56:38,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 00:56:38,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 00:56:38,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 00:56:38,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 00:56:38,261 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 99 [2020-09-25 00:56:38,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:56:38,262 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 00:56:38,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 00:56:38,262 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 00:56:38,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 00:56:38,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:56:38,263 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:56:38,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 00:56:38,264 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:56:38,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:56:38,264 INFO L82 PathProgramCache]: Analyzing trace with hash -276966773, now seen corresponding path program 10 times [2020-09-25 00:56:38,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:56:38,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669499590] [2020-09-25 00:56:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:56:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:38,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:38,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking...