/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=WIDEST --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/Fibonacci05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:08:26,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:08:26,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:08:26,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:08:26,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:08:26,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:08:26,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:08:26,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:08:26,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:08:26,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:08:26,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:08:26,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:08:26,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:08:26,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:08:26,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:08:26,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:08:26,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:08:26,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:08:26,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:08:26,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:08:26,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:08:26,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:08:26,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:08:26,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:08:26,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:08:26,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:08:26,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:08:26,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:08:26,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:08:26,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:08:26,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:08:26,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:08:26,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:08:26,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:08:26,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:08:26,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:08:26,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:08:26,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:08:26,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:08:26,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:08:26,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:08:26,367 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 03:08:26,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:08:26,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:08:26,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:08:26,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:08:26,394 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:08:26,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:08:26,395 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:08:26,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:08:26,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:08:26,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:08:26,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:08:26,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:08:26,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:08:26,396 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:08:26,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:08:26,396 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:08:26,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:08:26,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:08:26,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:08:26,397 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:08:26,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:08:26,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:08:26,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:08:26,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:08:26,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:08:26,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:08:26,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:08:26,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:08:26,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:08:26,399 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:08:26,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:08:26,869 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:08:26,873 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:08:26,876 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:08:26,878 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:08:26,879 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci05.c [2020-09-25 03:08:26,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2495ff64b/cb1e63d023f74515aaebe2aae294d08f/FLAG78cd9086b [2020-09-25 03:08:27,532 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:08:27,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci05.c [2020-09-25 03:08:27,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2495ff64b/cb1e63d023f74515aaebe2aae294d08f/FLAG78cd9086b [2020-09-25 03:08:27,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2495ff64b/cb1e63d023f74515aaebe2aae294d08f [2020-09-25 03:08:27,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:08:27,898 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:08:27,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:08:27,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:08:27,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:08:27,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:27" (1/1) ... [2020-09-25 03:08:27,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:27, skipping insertion in model container [2020-09-25 03:08:27,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:27" (1/1) ... [2020-09-25 03:08:27,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:08:27,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:08:28,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:08:28,174 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:08:28,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:08:28,208 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:08:28,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:28 WrapperNode [2020-09-25 03:08:28,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:08:28,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:08:28,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:08:28,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:08:28,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:28" (1/1) ... [2020-09-25 03:08:28,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:28" (1/1) ... [2020-09-25 03:08:28,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:28" (1/1) ... [2020-09-25 03:08:28,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:28" (1/1) ... [2020-09-25 03:08:28,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:28" (1/1) ... [2020-09-25 03:08:28,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:28" (1/1) ... [2020-09-25 03:08:28,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:28" (1/1) ... [2020-09-25 03:08:28,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:08:28,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:08:28,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:08:28,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:08:28,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:28" (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 03:08:28,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:08:28,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:08:28,439 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 03:08:28,439 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:08:28,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:08:28,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:08:28,439 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 03:08:28,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:08:28,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:08:28,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:08:28,658 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:08:28,658 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:08:28,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:28 BoogieIcfgContainer [2020-09-25 03:08:28,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:08:28,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:08:28,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:08:28,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:08:28,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:08:27" (1/3) ... [2020-09-25 03:08:28,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63cb2493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:28, skipping insertion in model container [2020-09-25 03:08:28,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:28" (2/3) ... [2020-09-25 03:08:28,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63cb2493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:28, skipping insertion in model container [2020-09-25 03:08:28,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:28" (3/3) ... [2020-09-25 03:08:28,676 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci05.c [2020-09-25 03:08:28,694 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:08:28,704 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:08:28,731 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:08:28,770 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:08:28,771 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:08:28,771 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:08:28,771 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:08:28,771 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:08:28,771 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:08:28,772 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:08:28,772 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:08:28,797 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-25 03:08:28,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 03:08:28,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:28,808 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 03:08:28,809 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:28,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:28,818 INFO L82 PathProgramCache]: Analyzing trace with hash -2064988448, now seen corresponding path program 1 times [2020-09-25 03:08:28,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:28,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67449820] [2020-09-25 03:08:28,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:28,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 03:08:29,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:29,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 03:08:29,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:08:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:08:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:08:29,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:08:29,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:29,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:29,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:08:29,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:29,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:29,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:29,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:29,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:08:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:29,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:29,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:08:29,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:08:29,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:29,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:29,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:29,229 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 03:08:29,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67449820] [2020-09-25 03:08:29,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:08:29,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:08:29,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680234572] [2020-09-25 03:08:29,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:08:29,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:29,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:08:29,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:08:29,266 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-09-25 03:08:29,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:29,398 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-09-25 03:08:29,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:08:29,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 03:08:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:29,416 INFO L225 Difference]: With dead ends: 48 [2020-09-25 03:08:29,416 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 03:08:29,421 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 03:08:29,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 03:08:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 03:08:29,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 03:08:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 03:08:29,482 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-09-25 03:08:29,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:29,482 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 03:08:29,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:08:29,483 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 03:08:29,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 03:08:29,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:29,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:29,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:08:29,487 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:29,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:29,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1678486471, now seen corresponding path program 1 times [2020-09-25 03:08:29,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:29,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803307189] [2020-09-25 03:08:29,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 03:08:29,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:29,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 03:08:29,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:08:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:08:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 03:08:29,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:29,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:29,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:29,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:08:29,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:29,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:29,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:29,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:29,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:08:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:29,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:29,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 03:08:29,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:08:29,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:29,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:29,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:29,745 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 03:08:29,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803307189] [2020-09-25 03:08:29,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:08:29,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:08:29,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266700434] [2020-09-25 03:08:29,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:08:29,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:29,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:08:29,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:08:29,750 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-09-25 03:08:29,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:29,825 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-09-25 03:08:29,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:08:29,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 03:08:29,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:29,828 INFO L225 Difference]: With dead ends: 38 [2020-09-25 03:08:29,828 INFO L226 Difference]: Without dead ends: 32 [2020-09-25 03:08:29,830 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 03:08:29,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-25 03:08:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-25 03:08:29,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 03:08:29,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 03:08:29,838 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2020-09-25 03:08:29,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:29,839 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 03:08:29,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:08:29,839 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 03:08:29,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:08:29,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:29,843 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:29,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:08:29,844 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:29,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:29,845 INFO L82 PathProgramCache]: Analyzing trace with hash 961212118, now seen corresponding path program 1 times [2020-09-25 03:08:29,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:29,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496417137] [2020-09-25 03:08:29,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:30,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:30,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:30,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:30,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:08:30,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:08:30,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-09-25 03:08:30,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:30,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:30,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:08:30,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 03:08:30,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:30,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:30,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:30,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:30,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:30,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:08:30,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:30,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:30,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:30,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:30,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:30,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:08:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:30,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:30,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:30,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:30,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:08:30,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 03:08:30,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:08:30,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:30,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:30,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:30,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:30,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:30,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:30,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:08:30,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:30,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:30,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:30,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:30,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:30,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:08:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:30,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:30,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:30,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:30,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:30,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:08:30,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:30,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:30,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:08:30,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:30,641 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 03:08:30,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496417137] [2020-09-25 03:08:30,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:30,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:08:30,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499392928] [2020-09-25 03:08:30,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:08:30,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:30,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:08:30,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:08:30,644 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-25 03:08:30,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:30,745 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-09-25 03:08:30,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:08:30,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 03:08:30,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:30,748 INFO L225 Difference]: With dead ends: 68 [2020-09-25 03:08:30,748 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 03:08:30,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:08:30,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 03:08:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 03:08:30,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 03:08:30,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 03:08:30,759 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-25 03:08:30,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:30,760 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 03:08:30,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:08:30,760 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 03:08:30,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 03:08:30,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:30,762 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:30,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:08:30,763 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:30,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:30,764 INFO L82 PathProgramCache]: Analyzing trace with hash -125795935, now seen corresponding path program 1 times [2020-09-25 03:08:30,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:30,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526275285] [2020-09-25 03:08:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:30,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:30,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:31,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:31,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 03:08:31,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:31,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-09-25 03:08:31,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:31,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:31,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:08:31,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 03:08:31,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:31,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:31,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:31,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:31,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:31,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:31,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:31,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:31,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:31,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:31,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:31,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:31,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:08:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:31,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:31,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:31,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:31,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:08:31,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:31,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-25 03:08:31,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:31,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:08:31,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:31,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:31,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:31,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:31,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:31,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:31,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 03:08:31,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:31,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:31,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:31,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-09-25 03:08:31,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:08:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:31,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:31,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:31,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:31,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:31,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:08:31,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:08:31,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 03:08:31,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526275285] [2020-09-25 03:08:31,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:31,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:08:31,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50329516] [2020-09-25 03:08:31,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:08:31,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:31,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:08:31,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:08:31,641 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 03:08:31,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:31,787 INFO L93 Difference]: Finished difference Result 100 states and 129 transitions. [2020-09-25 03:08:31,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:08:31,788 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 03:08:31,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:31,791 INFO L225 Difference]: With dead ends: 100 [2020-09-25 03:08:31,792 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 03:08:31,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:08:31,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 03:08:31,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-09-25 03:08:31,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 03:08:31,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2020-09-25 03:08:31,808 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 36 [2020-09-25 03:08:31,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:31,808 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2020-09-25 03:08:31,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:08:31,808 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2020-09-25 03:08:31,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:08:31,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:31,812 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:31,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:08:31,812 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:31,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:31,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1970096676, now seen corresponding path program 2 times [2020-09-25 03:08:31,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:31,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630751703] [2020-09-25 03:08:31,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:31,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:31,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:31,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:32,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:32,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:32,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:32,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:36,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:36,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 03:08:36,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:08:36,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4183 [2020-09-25 03:08:36,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:36,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:08:36,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:08:36,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 03:08:36,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 03:08:36,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:36,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:36,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:36,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:36,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:36,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:08:36,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:36,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:36,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:08:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:36,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:36,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:36,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:36,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:36,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:36,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:37,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:37,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 03:08:37,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:08:37,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1216 [2020-09-25 03:08:37,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:08:37,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:37,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:37,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:37,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:37,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:37,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:08:37,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:37,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 03:08:37,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:08:37,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:37,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:37,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:37,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:37,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:37,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:37,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:08:37,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:37,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:37,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:08:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:37,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:37,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:37,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:37,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:37,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:08:37,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:37,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:37,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:37,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:37,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:37,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:08:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:37,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:37,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:37,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:37,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:37,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:08:37,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:37,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:37,439 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 03:08:37,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630751703] [2020-09-25 03:08:37,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:37,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 03:08:37,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21359551] [2020-09-25 03:08:37,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:08:37,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:37,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:08:37,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:08:37,442 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand 6 states. [2020-09-25 03:08:37,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:37,538 INFO L93 Difference]: Finished difference Result 80 states and 101 transitions. [2020-09-25 03:08:37,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:08:37,539 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-25 03:08:37,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:37,541 INFO L225 Difference]: With dead ends: 80 [2020-09-25 03:08:37,541 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 03:08:37,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:08:37,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 03:08:37,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2020-09-25 03:08:37,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 03:08:37,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2020-09-25 03:08:37,554 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 52 [2020-09-25 03:08:37,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:37,555 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2020-09-25 03:08:37,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:08:37,555 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2020-09-25 03:08:37,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:08:37,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:37,559 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:37,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:08:37,560 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:37,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:37,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1486829505, now seen corresponding path program 2 times [2020-09-25 03:08:37,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:37,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264838785] [2020-09-25 03:08:37,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:37,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:37,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:37,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:37,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:38,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:39,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:41,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:41,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 03:08:41,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:08:41,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3844 [2020-09-25 03:08:41,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:41,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:08:41,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:08:41,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 03:08:41,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:41,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:41,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:41,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:41,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:41,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:41,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:41,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:41,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:41,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:08:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:41,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:41,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:41,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:42,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:42,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:42,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:08:42,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:08:42,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1152 [2020-09-25 03:08:42,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:42,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:08:42,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:42,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:08:42,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:42,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:42,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:42,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:42,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:42,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:08:42,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:42,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 03:08:42,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:42,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:42,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:08:42,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:42,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:42,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:42,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:42,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:42,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:42,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:08:42,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:42,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:42,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:42,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:08:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:42,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:42,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:42,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:42,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:42,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:08:42,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:42,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:42,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:08:42,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:42,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:08:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:42,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:42,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:42,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:42,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:42,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:08:42,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:42,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:42,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:42,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:42,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 03:08:42,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264838785] [2020-09-25 03:08:42,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:42,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:08:42,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599860950] [2020-09-25 03:08:42,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:08:42,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:42,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:08:42,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:08:42,798 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand 8 states. [2020-09-25 03:08:42,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:42,964 INFO L93 Difference]: Finished difference Result 116 states and 158 transitions. [2020-09-25 03:08:42,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:08:42,965 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-09-25 03:08:42,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:42,968 INFO L225 Difference]: With dead ends: 116 [2020-09-25 03:08:42,968 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 03:08:42,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 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 03:08:42,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 03:08:42,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2020-09-25 03:08:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 03:08:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-09-25 03:08:42,996 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 53 [2020-09-25 03:08:42,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:42,997 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-09-25 03:08:42,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:08:42,997 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-09-25 03:08:43,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 03:08:43,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:43,006 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:43,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:08:43,007 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:43,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:43,007 INFO L82 PathProgramCache]: Analyzing trace with hash -2068833840, now seen corresponding path program 3 times [2020-09-25 03:08:43,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:43,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846420912] [2020-09-25 03:08:43,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:43,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:43,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:43,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:45,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:45,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 03:08:45,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:08:45,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2051 [2020-09-25 03:08:45,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:45,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:45,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:08:45,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 03:08:45,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:45,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:45,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:45,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:45,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:45,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:45,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:45,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:45,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:45,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:45,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:45,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:45,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:08:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:45,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:45,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:45,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:08:46,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:08:46,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1408 [2020-09-25 03:08:46,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 03:08:46,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:46,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:08:46,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:46,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 03:08:46,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:46,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:08:46,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:46,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:46,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:46,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:08:46,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:46,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:46,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:08:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:46,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:46,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:08:46,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:46,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:46,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:46,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:08:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:46,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:46,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:08:46,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:46,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:46,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:46,635 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 03:08:46,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846420912] [2020-09-25 03:08:46,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:46,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 03:08:46,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246249374] [2020-09-25 03:08:46,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:08:46,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:46,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:08:46,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:08:46,639 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 6 states. [2020-09-25 03:08:46,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:46,728 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2020-09-25 03:08:46,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:08:46,729 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-09-25 03:08:46,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:46,730 INFO L225 Difference]: With dead ends: 64 [2020-09-25 03:08:46,730 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 03:08:46,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:08:46,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 03:08:46,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 03:08:46,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 03:08:46,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-09-25 03:08:46,746 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 54 [2020-09-25 03:08:46,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:46,747 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-09-25 03:08:46,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:08:46,747 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-09-25 03:08:46,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 03:08:46,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:46,751 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:46,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:08:46,752 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:46,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:46,752 INFO L82 PathProgramCache]: Analyzing trace with hash 4423077, now seen corresponding path program 4 times [2020-09-25 03:08:46,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:46,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505726299] [2020-09-25 03:08:46,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:47,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:47,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:47,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:51,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:51,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:51,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 03:08:51,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:08:51,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 03:08:51,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:51,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:08:51,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 03:08:51,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 03:08:51,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:51,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:51,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:51,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:51,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:51,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:51,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:51,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:51,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:51,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:08:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:51,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:51,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:51,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:51,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:51,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:52,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:53,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:53,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:53,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:53,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:56,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:56,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 03:08:56,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 03:08:56,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:08:56,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:56,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:08:56,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:08:56,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 03:08:56,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:56,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:56,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:56,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:56,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:56,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:08:56,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:56,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 03:08:56,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:56,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:56,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:56,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:08:56,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:57,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:57,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:57,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:57,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:57,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:57,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:08:57,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:57,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:57,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:08:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:57,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:57,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:57,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:57,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:57,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:08:57,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:57,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:57,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:57,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:57,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:57,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:08:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:57,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:57,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:57,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:57,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:57,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:57,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:58,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:58,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:08:58,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:08:58,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1873 [2020-09-25 03:08:58,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:08:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:08:58,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:58,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:58,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:58,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:58,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:08:58,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:58,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 03:08:58,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:58,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:08:58,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:58,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:08:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:58,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:58,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:58,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:58,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:58,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:08:58,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:58,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:08:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:08:59,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:08:59,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:59,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:59,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:59,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:08:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:59,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:59,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 03:08:59,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:59,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,088 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 83 proven. 61 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 03:08:59,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505726299] [2020-09-25 03:08:59,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:59,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:08:59,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78157615] [2020-09-25 03:08:59,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:08:59,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:59,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:08:59,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:08:59,090 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 10 states. [2020-09-25 03:08:59,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:59,353 INFO L93 Difference]: Finished difference Result 126 states and 174 transitions. [2020-09-25 03:08:59,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:08:59,354 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-25 03:08:59,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:59,356 INFO L225 Difference]: With dead ends: 126 [2020-09-25 03:08:59,356 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 03:08:59,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:08:59,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 03:08:59,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 64. [2020-09-25 03:08:59,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 03:08:59,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2020-09-25 03:08:59,374 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 89 [2020-09-25 03:08:59,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:59,374 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2020-09-25 03:08:59,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:08:59,374 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2020-09-25 03:08:59,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 03:08:59,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:59,376 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:59,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:08:59,376 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:59,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:59,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1604155219, now seen corresponding path program 5 times [2020-09-25 03:08:59,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:59,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109124883] [2020-09-25 03:08:59,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:04,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:04,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 03:09:04,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:09:04,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:09:04,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:09:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:09:04,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:09:04,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:04,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:04,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:04,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:04,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:04,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:04,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:04,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:04,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:04,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:09:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:04,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:04,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:04,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:04,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:04,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:09,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:09,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 03:09:09,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:09:09,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:09:09,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:09:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:09:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:09:09,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:09,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:09,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:09,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:09,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:09,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:09,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:09,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:09,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:09:09,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 03:09:09,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:09,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:09,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:09:09,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:09,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:09,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:09,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:09,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:09,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:09,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:09:09,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:09,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:09,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:09,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:09,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:09,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:09,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:09,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:09,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:09,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:09:09,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:09,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:09,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:09,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:09,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:09,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:09:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:09,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:09,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:09,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:09,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:09:09,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:09,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 03:09:09,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:09,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:09:09,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:09,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:09,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:09,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:09,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:09,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:09,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:09:09,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:09,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:09,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:09,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:09,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:09:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:09,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:09,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:09,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:09,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:09,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:09:09,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:09,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:10,003 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 46 proven. 32 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 03:09:10,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109124883] [2020-09-25 03:09:10,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:10,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:09:10,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107058984] [2020-09-25 03:09:10,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:09:10,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:10,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:09:10,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:09:10,006 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand 12 states. [2020-09-25 03:09:10,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:10,201 INFO L93 Difference]: Finished difference Result 114 states and 161 transitions. [2020-09-25 03:09:10,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:09:10,202 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-09-25 03:09:10,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:10,203 INFO L225 Difference]: With dead ends: 114 [2020-09-25 03:09:10,203 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 03:09:10,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:09:10,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 03:09:10,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-25 03:09:10,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 03:09:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-09-25 03:09:10,215 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 70 [2020-09-25 03:09:10,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:10,216 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-09-25 03:09:10,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:09:10,216 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-09-25 03:09:10,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 03:09:10,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:10,218 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:10,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:09:10,218 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:10,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:10,219 INFO L82 PathProgramCache]: Analyzing trace with hash -2047266186, now seen corresponding path program 6 times [2020-09-25 03:09:10,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:10,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782823234] [2020-09-25 03:09:10,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:10,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:10,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:10,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:10,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:10,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:11,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:12,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:12,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:15,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:15,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 03:09:15,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:09:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:09:15,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:09:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 03:09:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:09:15,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:15,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:15,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:15,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:15,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:15,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:15,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:15,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:15,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:15,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:15,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:15,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:15,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:09:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:15,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:15,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:15,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:15,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:15,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:15,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:16,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:16,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:17,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:09:20,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:09:20,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 03:09:20,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:09:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:09:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:09:20,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:20,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:20,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:20,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 03:09:20,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:20,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:09:20,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:20,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:20,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:20,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:09:20,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:20,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:20,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:20,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:20,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:09:20,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:20,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:20,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:20,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:20,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:09:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:20,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:20,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 03:09:20,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:20,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:20,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:20,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:20,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:09:20,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:20,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:20,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:20,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:20,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:20,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:20,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:09:20,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:20,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 47 proven. 41 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 03:09:20,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782823234] [2020-09-25 03:09:20,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:20,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:09:20,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943561830] [2020-09-25 03:09:20,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:09:20,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:20,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:09:20,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:09:20,770 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 10 states. [2020-09-25 03:09:21,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:21,068 INFO L93 Difference]: Finished difference Result 109 states and 138 transitions. [2020-09-25 03:09:21,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:09:21,070 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-09-25 03:09:21,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:21,072 INFO L225 Difference]: With dead ends: 109 [2020-09-25 03:09:21,072 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 03:09:21,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:09:21,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 03:09:21,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-09-25 03:09:21,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 03:09:21,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-09-25 03:09:21,081 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 71 [2020-09-25 03:09:21,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:21,081 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-09-25 03:09:21,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:09:21,081 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-09-25 03:09:21,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 03:09:21,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:21,083 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:21,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:09:21,083 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:21,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:21,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1575340027, now seen corresponding path program 7 times [2020-09-25 03:09:21,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:21,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080100073] [2020-09-25 03:09:21,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:21,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking...