/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-simple/fibo_10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:09:15,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:09:15,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:09:15,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:09:15,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:09:15,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:09:15,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:09:15,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:09:15,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:09:15,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:09:15,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:09:15,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:09:15,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:09:15,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:09:15,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:09:15,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:09:15,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:09:15,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:09:15,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:09:15,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:09:15,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:09:15,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:09:15,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:09:15,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:09:15,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:09:15,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:09:15,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:09:15,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:09:15,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:09:15,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:09:15,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:09:15,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:09:15,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:09:15,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:09:15,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:09:15,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:09:15,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:09:15,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:09:15,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:09:15,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:09:15,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:09:15,635 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 03:09:15,685 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:09:15,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:09:15,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:09:15,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:09:15,688 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:09:15,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:09:15,689 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:09:15,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:09:15,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:09:15,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:09:15,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:09:15,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:09:15,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:09:15,692 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:09:15,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:09:15,692 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:09:15,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:09:15,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:09:15,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:09:15,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:09:15,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:09:15,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:09:15,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:09:15,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:09:15,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:09:15,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:09:15,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:09:15,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:09:15,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:09:15,695 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 03:09:16,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:09:16,169 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:09:16,175 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:09:16,179 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:09:16,179 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:09:16,182 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2020-09-25 03:09:16,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca269f49b/416c6fe5898d4324841e5149eb6431fe/FLAGf9b71af9c [2020-09-25 03:09:16,798 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:09:16,799 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2020-09-25 03:09:16,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca269f49b/416c6fe5898d4324841e5149eb6431fe/FLAGf9b71af9c [2020-09-25 03:09:17,168 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca269f49b/416c6fe5898d4324841e5149eb6431fe [2020-09-25 03:09:17,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:09:17,189 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:09:17,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:09:17,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:09:17,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:09:17,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:09:17" (1/1) ... [2020-09-25 03:09:17,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678923a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:17, skipping insertion in model container [2020-09-25 03:09:17,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:09:17" (1/1) ... [2020-09-25 03:09:17,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:09:17,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:09:17,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:09:17,456 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:09:17,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:09:17,487 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:09:17,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:17 WrapperNode [2020-09-25 03:09:17,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:09:17,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:09:17,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:09:17,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:09:17,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:17" (1/1) ... [2020-09-25 03:09:17,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:17" (1/1) ... [2020-09-25 03:09:17,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:17" (1/1) ... [2020-09-25 03:09:17,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:17" (1/1) ... [2020-09-25 03:09:17,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:17" (1/1) ... [2020-09-25 03:09:17,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:17" (1/1) ... [2020-09-25 03:09:17,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:17" (1/1) ... [2020-09-25 03:09:17,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:09:17,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:09:17,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:09:17,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:09:17,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:17" (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 03:09:17,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:09:17,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:09:17,693 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 03:09:17,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:09:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:09:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:09:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 03:09:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:09:17,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:09:17,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:09:17,921 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:09:17,922 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:09:17,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:09:17 BoogieIcfgContainer [2020-09-25 03:09:17,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:09:17,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:09:17,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:09:17,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:09:17,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:09:17" (1/3) ... [2020-09-25 03:09:17,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4c0bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:09:17, skipping insertion in model container [2020-09-25 03:09:17,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:17" (2/3) ... [2020-09-25 03:09:17,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4c0bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:09:17, skipping insertion in model container [2020-09-25 03:09:17,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:09:17" (3/3) ... [2020-09-25 03:09:17,960 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_10-2.c [2020-09-25 03:09:17,987 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:09:18,011 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:09:18,042 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:09:18,072 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:09:18,072 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:09:18,073 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:09:18,073 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:09:18,073 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:09:18,073 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:09:18,073 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:09:18,074 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:09:18,097 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 03:09:18,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 03:09:18,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:18,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:18,107 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:18,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:18,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 03:09:18,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:18,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958182188] [2020-09-25 03:09:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:18,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:18,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:18,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:09:18,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:18,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 03:09:18,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:18,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:18,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:18,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:09:18,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:09:18,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:18,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:18,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:18,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:18,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:18,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:09:18,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:18,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:18,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:18,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:18,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:18,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:18,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:09:18,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:18,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:18,435 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 03:09:18,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958182188] [2020-09-25 03:09:18,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:18,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:09:18,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348877367] [2020-09-25 03:09:18,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:09:18,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:18,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:09:18,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:09:18,468 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 03:09:18,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:18,594 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 03:09:18,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:09:18,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 03:09:18,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:18,611 INFO L225 Difference]: With dead ends: 44 [2020-09-25 03:09:18,611 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 03:09:18,615 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 03:09:18,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 03:09:18,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 03:09:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:09:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 03:09:18,675 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 03:09:18,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:18,675 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 03:09:18,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:09:18,676 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 03:09:18,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 03:09:18,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:18,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:18,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:09:18,679 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:18,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:18,679 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 03:09:18,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:18,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742201901] [2020-09-25 03:09:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:18,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:18,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:18,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:09:18,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:18,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 03:09:18,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:18,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:18,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:18,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:18,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:18,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:18,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:18,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:09:18,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:18,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:18,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:18,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:18,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:18,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:18,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:18,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:18,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:18,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:18,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 03:09:18,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:18,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:18,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:18,896 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 03:09:18,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742201901] [2020-09-25 03:09:18,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:18,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:09:18,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885085336] [2020-09-25 03:09:18,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:09:18,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:18,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:09:18,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:09:18,901 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 03:09:18,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:18,978 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 03:09:18,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:09:18,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 03:09:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:18,981 INFO L225 Difference]: With dead ends: 36 [2020-09-25 03:09:18,981 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 03:09:18,982 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 03:09:18,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 03:09:18,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 03:09:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:09:18,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 03:09:18,991 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 03:09:18,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:18,992 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 03:09:18,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:09:18,992 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 03:09:18,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:09:18,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:18,994 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] [2020-09-25 03:09:18,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:09:18,994 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:18,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:18,995 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 03:09:18,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:18,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893213137] [2020-09-25 03:09:18,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:19,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:09:19,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:19,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-09-25 03:09:19,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:19,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:19,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:19,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:09:19,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:09:19,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:19,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:19,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:19,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:19,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:19,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:19,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:19,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:19,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:09:20,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:20,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-09-25 03:09:20,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:09:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:20,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:20,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:20,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:09:20,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:20,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:20,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:20,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:20,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:09:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:20,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:20,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:09:20,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:20,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 03:09:20,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893213137] [2020-09-25 03:09:20,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:20,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:09:20,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517307904] [2020-09-25 03:09:20,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:09:20,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:20,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:09:20,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:09:20,141 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-25 03:09:20,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:20,262 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-09-25 03:09:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:09:20,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 03:09:20,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:20,265 INFO L225 Difference]: With dead ends: 62 [2020-09-25 03:09:20,266 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 03:09:20,267 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 03:09:20,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 03:09:20,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-25 03:09:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 03:09:20,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 03:09:20,277 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2020-09-25 03:09:20,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:20,278 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 03:09:20,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:09:20,278 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 03:09:20,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:09:20,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:20,280 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 03:09:20,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:09:20,281 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:20,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:20,281 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 03:09:20,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:20,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541387159] [2020-09-25 03:09:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:09:20,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:09:20,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-09-25 03:09:20,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:20,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:09:20,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:20,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:20,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:20,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:20,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:20,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:20,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:20,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:20,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:21,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:09:21,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:09:21,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-09-25 03:09:21,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:21,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:21,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:21,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:09:21,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:21,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:21,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:21,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:21,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 03:09:21,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:21,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:21,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:21,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:21,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:21,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:21,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:21,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:21,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:21,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:09:21,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:21,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 03:09:21,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541387159] [2020-09-25 03:09:21,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:21,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:09:21,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169046044] [2020-09-25 03:09:21,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:09:21,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:21,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:09:21,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:09:21,548 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-25 03:09:21,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:21,679 INFO L93 Difference]: Finished difference Result 94 states and 129 transitions. [2020-09-25 03:09:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:09:21,680 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 03:09:21,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:21,684 INFO L225 Difference]: With dead ends: 94 [2020-09-25 03:09:21,684 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 03:09:21,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:09:21,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 03:09:21,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 03:09:21,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 03:09:21,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-09-25 03:09:21,700 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 35 [2020-09-25 03:09:21,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:21,700 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-09-25 03:09:21,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:09:21,701 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-09-25 03:09:21,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:09:21,703 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:21,704 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] [2020-09-25 03:09:21,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:09:21,704 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:21,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:21,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-25 03:09:21,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:21,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726802256] [2020-09-25 03:09:21,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:21,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:26,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:09:26,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:09:26,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:09:26,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:26,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:09:26,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:26,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:26,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:26,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:26,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:26,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:09:26,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:26,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:26,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:26,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:29,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:29,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:09:29,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:09:29,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3191 [2020-09-25 03:09:29,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:29,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:29,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:29,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:09:29,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:29,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:29,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:30,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:30,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:30,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:09:30,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:30,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 03:09:30,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:30,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:30,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:30,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:30,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:30,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:30,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:30,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:30,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:30,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:30,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:09:30,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:30,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:30,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:30,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:30,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:30,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:09:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:30,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:30,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:30,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:30,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:30,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:09:30,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:30,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:30,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:30,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:09:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:30,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:30,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:30,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:30,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:09:30,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:30,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:30,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:30,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 03:09:30,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726802256] [2020-09-25 03:09:30,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:30,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:09:30,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517929488] [2020-09-25 03:09:30,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:09:30,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:30,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:09:30,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:09:30,166 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 8 states. [2020-09-25 03:09:30,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:30,335 INFO L93 Difference]: Finished difference Result 108 states and 148 transitions. [2020-09-25 03:09:30,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:09:30,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-25 03:09:30,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:30,339 INFO L225 Difference]: With dead ends: 108 [2020-09-25 03:09:30,339 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 03:09:30,345 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 03:09:30,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 03:09:30,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 46. [2020-09-25 03:09:30,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 03:09:30,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-09-25 03:09:30,367 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 51 [2020-09-25 03:09:30,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:30,371 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-09-25 03:09:30,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:09:30,372 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-09-25 03:09:30,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:09:30,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:30,377 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] [2020-09-25 03:09:30,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:09:30,377 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:30,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:30,378 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 03:09:30,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:30,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505902922] [2020-09-25 03:09:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:30,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:30,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:30,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:32,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 03:09:32,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:32,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1670 [2020-09-25 03:09:32,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:32,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:32,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:32,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:09:32,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:32,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:32,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:32,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:32,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:32,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:32,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:32,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:32,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:32,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:09:33,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:33,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1617 [2020-09-25 03:09:33,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:33,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:09:33,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:33,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:33,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:33,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 03:09:33,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:33,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:33,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:33,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:33,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:33,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:33,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:09:33,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:33,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:33,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:33,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:33,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:33,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:33,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:09:33,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:33,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:33,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:33,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:33,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:09:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:33,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:33,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 03:09:33,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:33,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 03:09:33,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505902922] [2020-09-25 03:09:33,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:33,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:09:33,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983627406] [2020-09-25 03:09:33,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:09:33,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:33,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:09:33,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:09:33,903 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 7 states. [2020-09-25 03:09:34,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:34,065 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2020-09-25 03:09:34,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:09:34,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 03:09:34,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:34,069 INFO L225 Difference]: With dead ends: 62 [2020-09-25 03:09:34,070 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 03:09:34,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:09:34,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 03:09:34,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2020-09-25 03:09:34,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 03:09:34,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2020-09-25 03:09:34,088 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 52 [2020-09-25 03:09:34,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:34,089 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2020-09-25 03:09:34,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:09:34,089 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2020-09-25 03:09:34,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 03:09:34,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:34,097 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] [2020-09-25 03:09:34,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:09:34,098 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:34,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:34,098 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-25 03:09:34,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:34,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537413905] [2020-09-25 03:09:34,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:34,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:39,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 03:09:39,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:09:39,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 03:09:39,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:39,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:09:39,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:09:39,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 03:09:39,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:39,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:39,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:39,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:39,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:39,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:39,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:39,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:40,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 03:09:44,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:09:44,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:09:44,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:09:44,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:09:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 03:09:44,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:44,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:44,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:44,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:44,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 03:09:44,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:44,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:44,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:09:44,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:44,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:44,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:44,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:44,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 03:09:44,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:44,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:44,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:44,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:44,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:44,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:44,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:44,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:09:44,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:44,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:44,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:44,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:44,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:09:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:44,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:46,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:09:46,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:09:46,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2373 [2020-09-25 03:09:46,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:46,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:46,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:46,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:09:46,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:46,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:46,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:46,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:46,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:46,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 03:09:46,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:46,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:46,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:46,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:09:46,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:46,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:46,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:46,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:46,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:46,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:09:46,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:46,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:46,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:46,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:09:46,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:46,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:46,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:46,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:46,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:46,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:09:46,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:46,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:46,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:09:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:46,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:46,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:46,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:46,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:09:46,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:46,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:46,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:46,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 65 proven. 80 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-09-25 03:09:47,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537413905] [2020-09-25 03:09:47,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:47,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:09:47,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815135344] [2020-09-25 03:09:47,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:09:47,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:47,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:09:47,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:09:47,008 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 9 states. [2020-09-25 03:09:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:47,261 INFO L93 Difference]: Finished difference Result 105 states and 145 transitions. [2020-09-25 03:09:47,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:09:47,263 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-25 03:09:47,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:47,264 INFO L225 Difference]: With dead ends: 105 [2020-09-25 03:09:47,264 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 03:09:47,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:09:47,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 03:09:47,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2020-09-25 03:09:47,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 03:09:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-09-25 03:09:47,282 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 87 [2020-09-25 03:09:47,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:47,283 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-09-25 03:09:47,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:09:47,284 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-09-25 03:09:47,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 03:09:47,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:47,288 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:47,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:09:47,288 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:47,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:47,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1108116753, now seen corresponding path program 4 times [2020-09-25 03:09:47,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:47,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243476414] [2020-09-25 03:09:47,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:47,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:47,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:48,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:48,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:48,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:48,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:48,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:48,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:49,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:51,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:52,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 03:09:52,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 03:09:52,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 03:09:52,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:52,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:09:52,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:09:52,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 03:09:52,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:52,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:52,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:52,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:52,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:52,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:52,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:52,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:52,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:52,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:52,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:52,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:52,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:52,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:57,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 03:09:57,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:09:57,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 03:09:57,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:57,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:09:57,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:09:57,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 03:09:57,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:57,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:57,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:57,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:58,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:09:58,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:09:58,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1384 [2020-09-25 03:09:58,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:58,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:58,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:58,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:09:58,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:58,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:58,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:58,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:58,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:58,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 03:09:58,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:58,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:58,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:58,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:58,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:58,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:58,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:58,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:58,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:58,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:09:58,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:58,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:58,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:58,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:58,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:58,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:58,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:58,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:58,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:58,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:58,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:58,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:58,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:58,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:09:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:58,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:58,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:58,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:09:58,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:58,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:58,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:58,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:58,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:58,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 03:09:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:58,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:01,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:02,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:02,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:02,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:02,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:02,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:02,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:03,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:10:03,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 03:10:03,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 03:10:03,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:03,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:03,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:03,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 03:10:03,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:03,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:03,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:06,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:10:06,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:10:06,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2161 [2020-09-25 03:10:06,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:10:06,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:06,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:06,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:06,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:06,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:06,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:10:06,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:06,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:06,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:06,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:06,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:06,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:06,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:06,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:06,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:06,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:10:06,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:06,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:06,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:06,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:06,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:06,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:06,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:06,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:06,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:06,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:06,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:06,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:06,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:06,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:10:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:06,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:06,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:06,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:10:06,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:06,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:06,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:06,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:06,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:06,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 03:10:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:06,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:06,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:06,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:06,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:10:06,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:10:06,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 150 proven. 97 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-09-25 03:10:06,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243476414] [2020-09-25 03:10:06,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:06,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:10:06,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156276236] [2020-09-25 03:10:06,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:10:06,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:06,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:10:06,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:10:06,193 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 9 states. [2020-09-25 03:10:06,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:06,536 INFO L93 Difference]: Finished difference Result 140 states and 192 transitions. [2020-09-25 03:10:06,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:10:06,539 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-09-25 03:10:06,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:06,542 INFO L225 Difference]: With dead ends: 140 [2020-09-25 03:10:06,543 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 03:10:06,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:10:06,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 03:10:06,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 69. [2020-09-25 03:10:06,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-25 03:10:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2020-09-25 03:10:06,566 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 121 [2020-09-25 03:10:06,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:06,567 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2020-09-25 03:10:06,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:10:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2020-09-25 03:10:06,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 03:10:06,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:06,572 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] [2020-09-25 03:10:06,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:10:06,572 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:06,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:06,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 5 times [2020-09-25 03:10:06,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:06,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594987302] [2020-09-25 03:10:06,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:06,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:07,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:08,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:08,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking...