/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 --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:28:18,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:28:18,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:28:18,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:28:18,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:28:18,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:28:18,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:28:18,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:28:18,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:28:18,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:28:18,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:28:18,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:28:18,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:28:18,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:28:18,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:28:18,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:28:18,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:28:18,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:28:18,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:28:18,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:28:18,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:28:18,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:28:18,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:28:18,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:28:18,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:28:18,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:28:18,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:28:18,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:28:18,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:28:18,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:28:18,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:28:18,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:28:18,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:28:18,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:28:18,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:28:18,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:28:18,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:28:18,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:28:18,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:28:18,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:28:18,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:28:18,908 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 [2020-09-21 11:28:18,952 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:28:18,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:28:18,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:28:18,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:28:18,956 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:28:18,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:28:18,957 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:28:18,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:28:18,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:28:18,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:28:18,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:28:18,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:28:18,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:28:18,960 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:28:18,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:28:18,960 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:28:18,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:28:18,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:28:18,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:28:18,961 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:28:18,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:28:18,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:28:18,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:28:18,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:28:18,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:28:18,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:28:18,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:28:18,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:28:18,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:28:18,964 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.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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:28:19,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:28:19,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:28:19,507 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:28:19,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:28:19,509 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:28:19,510 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-21 11:28:19,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3678bfda5/c8599e26495946f39d736c4d7a996096/FLAG5d6006b82 [2020-09-21 11:28:20,255 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:28:20,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-21 11:28:20,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3678bfda5/c8599e26495946f39d736c4d7a996096/FLAG5d6006b82 [2020-09-21 11:28:20,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3678bfda5/c8599e26495946f39d736c4d7a996096 [2020-09-21 11:28:20,500 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:28:20,507 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:28:20,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:28:20,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:28:20,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:28:20,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:28:20" (1/1) ... [2020-09-21 11:28:20,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23bccf0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:20, skipping insertion in model container [2020-09-21 11:28:20,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:28:20" (1/1) ... [2020-09-21 11:28:20,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:28:20,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:28:21,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:28:21,257 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:28:21,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:28:21,415 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:28:21,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:21 WrapperNode [2020-09-21 11:28:21,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:28:21,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:28:21,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:28:21,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:28:21,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:21" (1/1) ... [2020-09-21 11:28:21,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:21" (1/1) ... [2020-09-21 11:28:21,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:21" (1/1) ... [2020-09-21 11:28:21,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:21" (1/1) ... [2020-09-21 11:28:21,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:21" (1/1) ... [2020-09-21 11:28:21,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:21" (1/1) ... [2020-09-21 11:28:21,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:21" (1/1) ... [2020-09-21 11:28:21,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:28:21,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:28:21,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:28:21,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:28:21,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:21" (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 [2020-09-21 11:28:21,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:28:21,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:28:21,642 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 11:28:21,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:28:21,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 11:28:21,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:28:21,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:28:21,643 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 11:28:21,643 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:28:21,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:28:21,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:28:23,216 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:28:23,217 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 11:28:23,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:28:23 BoogieIcfgContainer [2020-09-21 11:28:23,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:28:23,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:28:23,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:28:23,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:28:23,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:28:20" (1/3) ... [2020-09-21 11:28:23,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a8d867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:28:23, skipping insertion in model container [2020-09-21 11:28:23,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:21" (2/3) ... [2020-09-21 11:28:23,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a8d867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:28:23, skipping insertion in model container [2020-09-21 11:28:23,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:28:23" (3/3) ... [2020-09-21 11:28:23,236 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label36.c [2020-09-21 11:28:23,249 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:28:23,260 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:28:23,282 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:28:23,314 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:28:23,315 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:28:23,315 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:28:23,315 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:28:23,315 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:28:23,315 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:28:23,315 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:28:23,316 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:28:23,346 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-09-21 11:28:23,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-21 11:28:23,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:23,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:23,359 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:23,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:23,367 INFO L82 PathProgramCache]: Analyzing trace with hash 406410443, now seen corresponding path program 1 times [2020-09-21 11:28:23,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:23,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506812948] [2020-09-21 11:28:23,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:23,623 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:23,624 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:23,624 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:23,624 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:23,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-21 11:28:23,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:23,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 11:28:23,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:23,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:28:23,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:28:23,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-21 11:28:23,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:28:23,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:23,815 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:23,816 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:23,816 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:23,816 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:23,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:23,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:23,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:28:23,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:23,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:23,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:23,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:28:23,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:28:23,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:28:23,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506812948] [2020-09-21 11:28:23,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:23,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:28:23,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548924677] [2020-09-21 11:28:23,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:28:23,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:23,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:28:23,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:23,908 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 5 states. [2020-09-21 11:28:27,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:27,016 INFO L93 Difference]: Finished difference Result 886 states and 1612 transitions. [2020-09-21 11:28:27,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:28:27,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-09-21 11:28:27,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:27,043 INFO L225 Difference]: With dead ends: 886 [2020-09-21 11:28:27,044 INFO L226 Difference]: Without dead ends: 564 [2020-09-21 11:28:27,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:28:27,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-09-21 11:28:27,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 560. [2020-09-21 11:28:27,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-09-21 11:28:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 861 transitions. [2020-09-21 11:28:27,158 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 861 transitions. Word has length 54 [2020-09-21 11:28:27,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:27,159 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 861 transitions. [2020-09-21 11:28:27,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:28:27,160 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 861 transitions. [2020-09-21 11:28:27,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-21 11:28:27,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:27,177 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:27,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:28:27,178 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:27,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:27,181 INFO L82 PathProgramCache]: Analyzing trace with hash -724645666, now seen corresponding path program 1 times [2020-09-21 11:28:27,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:27,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973565161] [2020-09-21 11:28:27,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:27,353 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:27,354 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:27,354 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:27,354 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:27,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-21 11:28:27,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:27,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 11:28:27,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:28:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:28:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-21 11:28:27,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:27,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:27,447 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:27,448 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:27,448 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:27,449 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:27,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:27,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:27,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:28:27,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:27,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:27,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:28:27,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:28:27,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:28:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:27,527 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:27,527 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:27,527 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:27,528 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:27,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-21 11:28:27,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:27,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:28:27,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:28:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-21 11:28:27,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:27,641 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:28:27,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973565161] [2020-09-21 11:28:27,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:27,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:28:27,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93830844] [2020-09-21 11:28:27,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:28:27,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:27,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:28:27,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:28:27,646 INFO L87 Difference]: Start difference. First operand 560 states and 861 transitions. Second operand 7 states. [2020-09-21 11:28:29,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:29,962 INFO L93 Difference]: Finished difference Result 1518 states and 2374 transitions. [2020-09-21 11:28:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:28:29,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-09-21 11:28:29,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:29,977 INFO L225 Difference]: With dead ends: 1518 [2020-09-21 11:28:29,978 INFO L226 Difference]: Without dead ends: 964 [2020-09-21 11:28:29,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:28:29,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2020-09-21 11:28:30,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 944. [2020-09-21 11:28:30,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 944 states. [2020-09-21 11:28:30,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1336 transitions. [2020-09-21 11:28:30,055 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1336 transitions. Word has length 148 [2020-09-21 11:28:30,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:30,056 INFO L479 AbstractCegarLoop]: Abstraction has 944 states and 1336 transitions. [2020-09-21 11:28:30,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:28:30,056 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1336 transitions. [2020-09-21 11:28:30,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-21 11:28:30,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:30,065 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:30,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:28:30,066 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:30,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:30,066 INFO L82 PathProgramCache]: Analyzing trace with hash 2026240930, now seen corresponding path program 1 times [2020-09-21 11:28:30,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:30,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960528806] [2020-09-21 11:28:30,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:30,233 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:30,233 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:30,233 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:30,234 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:30,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-21 11:28:30,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:30,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-21 11:28:30,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:28:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:28:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-21 11:28:30,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:30,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:30,313 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:30,314 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:30,314 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:30,314 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:30,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:30,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:30,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:28:30,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:30,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:30,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:30,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:28:30,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:28:30,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:28:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:30,398 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:30,398 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:30,399 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:30,399 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:30,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-21 11:28:30,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:30,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 11:28:30,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:30,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:30,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:28:30,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-21 11:28:30,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:28:30,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960528806] [2020-09-21 11:28:30,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:30,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:28:30,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089499451] [2020-09-21 11:28:30,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:28:30,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:30,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:28:30,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:28:30,550 INFO L87 Difference]: Start difference. First operand 944 states and 1336 transitions. Second operand 8 states. [2020-09-21 11:28:32,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:32,996 INFO L93 Difference]: Finished difference Result 2490 states and 3798 transitions. [2020-09-21 11:28:32,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:28:32,996 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 194 [2020-09-21 11:28:32,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:33,015 INFO L225 Difference]: With dead ends: 2490 [2020-09-21 11:28:33,015 INFO L226 Difference]: Without dead ends: 1552 [2020-09-21 11:28:33,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:28:33,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2020-09-21 11:28:33,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1518. [2020-09-21 11:28:33,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1518 states. [2020-09-21 11:28:33,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 2119 transitions. [2020-09-21 11:28:33,109 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 2119 transitions. Word has length 194 [2020-09-21 11:28:33,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:33,111 INFO L479 AbstractCegarLoop]: Abstraction has 1518 states and 2119 transitions. [2020-09-21 11:28:33,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:28:33,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 2119 transitions. [2020-09-21 11:28:33,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-21 11:28:33,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:33,123 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:33,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:28:33,127 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:33,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:33,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1200176176, now seen corresponding path program 1 times [2020-09-21 11:28:33,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:33,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562188307] [2020-09-21 11:28:33,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:33,228 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:33,229 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:33,229 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:33,229 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:33,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-21 11:28:33,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:33,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-21 11:28:33,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:33,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:28:33,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:28:33,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-21 11:28:33,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:33,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:33,348 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:33,349 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:33,349 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:33,349 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:33,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:33,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:33,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:28:33,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:33,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:28:33,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:33,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:28:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:33,419 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:33,419 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:33,419 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:33,419 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:33,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 11:28:33,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:33,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 11:28:33,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:33,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:33,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:28:33,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-21 11:28:33,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:33,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-21 11:28:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:33,557 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:33,557 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:33,558 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:33,558 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:33,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 11:28:33,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:33,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:33,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-21 11:28:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:33,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:33,691 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 94 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-21 11:28:33,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562188307] [2020-09-21 11:28:33,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:28:33,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:28:33,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935045406] [2020-09-21 11:28:33,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:28:33,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:33,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:28:33,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:28:33,696 INFO L87 Difference]: Start difference. First operand 1518 states and 2119 transitions. Second operand 8 states. [2020-09-21 11:28:35,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:35,737 INFO L93 Difference]: Finished difference Result 3408 states and 4687 transitions. [2020-09-21 11:28:35,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:28:35,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 213 [2020-09-21 11:28:35,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:35,750 INFO L225 Difference]: With dead ends: 3408 [2020-09-21 11:28:35,750 INFO L226 Difference]: Without dead ends: 1896 [2020-09-21 11:28:35,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:28:35,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2020-09-21 11:28:35,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1884. [2020-09-21 11:28:35,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-09-21 11:28:35,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2507 transitions. [2020-09-21 11:28:35,827 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2507 transitions. Word has length 213 [2020-09-21 11:28:35,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:35,827 INFO L479 AbstractCegarLoop]: Abstraction has 1884 states and 2507 transitions. [2020-09-21 11:28:35,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:28:35,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2507 transitions. [2020-09-21 11:28:35,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-09-21 11:28:35,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:35,836 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:35,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:28:35,837 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:35,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:35,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1683146711, now seen corresponding path program 1 times [2020-09-21 11:28:35,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:35,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664427970] [2020-09-21 11:28:35,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:35,994 FATAL L256 erpolLogProxyWrapper]: Difference in size: 5 [2020-09-21 11:28:35,994 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -89 [2020-09-21 11:28:35,995 FATAL L256 erpolLogProxyWrapper]: Difference in width: 89 [2020-09-21 11:28:35,995 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:35,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-09-21 11:28:35,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:35,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 11:28:35,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-21 11:28:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-21 11:28:35,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:28:36,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:36,117 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:36,117 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:36,117 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:36,118 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:36,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:36,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:36,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:36,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:36,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:36,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:36,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:36,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:36,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:28:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:36,154 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:36,154 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:36,154 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:36,154 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:36,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-21 11:28:36,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:36,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:28:36,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:36,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:36,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:36,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 11:28:36,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:36,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-21 11:28:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:36,218 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:36,219 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:36,219 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:36,219 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:36,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 11:28:36,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:36,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:28:36,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:28:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-21 11:28:36,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:36,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-09-21 11:28:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:36,422 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:36,423 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:36,423 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:36,423 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:36,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 11:28:36,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:36,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:36,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:36,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:36,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-21 11:28:36,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:36,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:28:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 225 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-21 11:28:36,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664427970] [2020-09-21 11:28:36,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:28:36,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:28:36,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450106769] [2020-09-21 11:28:36,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:28:36,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:36,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:28:36,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:28:36,687 INFO L87 Difference]: Start difference. First operand 1884 states and 2507 transitions. Second operand 7 states. [2020-09-21 11:28:38,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:38,474 INFO L93 Difference]: Finished difference Result 3688 states and 4983 transitions. [2020-09-21 11:28:38,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:28:38,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 297 [2020-09-21 11:28:38,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:38,491 INFO L225 Difference]: With dead ends: 3688 [2020-09-21 11:28:38,491 INFO L226 Difference]: Without dead ends: 1910 [2020-09-21 11:28:38,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:28:38,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2020-09-21 11:28:38,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1880. [2020-09-21 11:28:38,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1880 states. [2020-09-21 11:28:38,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2201 transitions. [2020-09-21 11:28:38,611 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2201 transitions. Word has length 297 [2020-09-21 11:28:38,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:38,612 INFO L479 AbstractCegarLoop]: Abstraction has 1880 states and 2201 transitions. [2020-09-21 11:28:38,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:28:38,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2201 transitions. [2020-09-21 11:28:38,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-09-21 11:28:38,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:38,622 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-21 11:28:38,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:28:38,622 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:38,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:38,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1242283415, now seen corresponding path program 1 times [2020-09-21 11:28:38,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:38,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407949304] [2020-09-21 11:28:38,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:38,808 FATAL L256 erpolLogProxyWrapper]: Difference in size: 7 [2020-09-21 11:28:38,808 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -311 [2020-09-21 11:28:38,808 FATAL L256 erpolLogProxyWrapper]: Difference in width: 311 [2020-09-21 11:28:38,809 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:38,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-09-21 11:28:38,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:38,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 11:28:38,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:38,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:38,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-09-21 11:28:38,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 11:28:38,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:38,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:38,945 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:38,946 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:38,946 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:38,946 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:38,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:38,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:38,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:38,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:38,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:38,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:28:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:38,970 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:38,970 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:38,970 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:38,971 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:38,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 11:28:38,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:38,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:38,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:38,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:38,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:38,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:38,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:39,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 11:28:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:39,025 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:39,025 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:39,026 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:39,026 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:39,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 11:28:39,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:39,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:39,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:39,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:39,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:39,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:39,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:39,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 11:28:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:39,120 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:39,120 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:39,120 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:39,122 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:39,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 11:28:39,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:39,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:28:39,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 11:28:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:39,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-09-21 11:28:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:39,213 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:39,213 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:39,213 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:39,213 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:39,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 11:28:39,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:39,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:28:39,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:39,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:39,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:28:39,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 11:28:39,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 417 proven. 2 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2020-09-21 11:28:39,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407949304] [2020-09-21 11:28:39,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:28:39,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:28:39,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816526869] [2020-09-21 11:28:39,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:28:39,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:39,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:28:39,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:28:39,596 INFO L87 Difference]: Start difference. First operand 1880 states and 2201 transitions. Second operand 8 states. [2020-09-21 11:28:42,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:42,918 INFO L93 Difference]: Finished difference Result 5048 states and 5952 transitions. [2020-09-21 11:28:42,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 11:28:42,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 432 [2020-09-21 11:28:42,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:42,931 INFO L225 Difference]: With dead ends: 5048 [2020-09-21 11:28:42,931 INFO L226 Difference]: Without dead ends: 3168 [2020-09-21 11:28:42,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-21 11:28:42,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3168 states. [2020-09-21 11:28:42,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3168 to 2432. [2020-09-21 11:28:42,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2432 states. [2020-09-21 11:28:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 2717 transitions. [2020-09-21 11:28:42,999 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 2717 transitions. Word has length 432 [2020-09-21 11:28:43,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:43,000 INFO L479 AbstractCegarLoop]: Abstraction has 2432 states and 2717 transitions. [2020-09-21 11:28:43,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:28:43,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 2717 transitions. [2020-09-21 11:28:43,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-09-21 11:28:43,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:43,014 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:43,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:28:43,015 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:43,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:43,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1681885400, now seen corresponding path program 1 times [2020-09-21 11:28:43,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:43,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485642485] [2020-09-21 11:28:43,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:43,232 FATAL L256 erpolLogProxyWrapper]: Difference in size: 6 [2020-09-21 11:28:43,233 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -111 [2020-09-21 11:28:43,233 FATAL L256 erpolLogProxyWrapper]: Difference in width: 146 [2020-09-21 11:28:43,233 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:43,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 571 [2020-09-21 11:28:43,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:43,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-21 11:28:43,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-09-21 11:28:43,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-21 11:28:43,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:43,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:43,353 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:43,353 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:43,353 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:43,354 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:43,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:43,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:43,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:43,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:43,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:28:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:43,377 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:43,377 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:43,377 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:43,377 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:43,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 11:28:43,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:43,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:43,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:43,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:43,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:43,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:43,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 11:28:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:43,464 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:43,465 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:43,465 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:43,465 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:43,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 11:28:43,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:43,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 11:28:43,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:43,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:43,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:43,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 11:28:43,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:43,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 11:28:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:43,568 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:43,568 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:43,569 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:43,569 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:43,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 11:28:43,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:43,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 11:28:43,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:43,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:43,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:28:43,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-21 11:28:43,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:43,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-09-21 11:28:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:43,658 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:43,659 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:43,659 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:43,659 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:43,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-21 11:28:43,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:43,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:43,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:43,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:43,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-09-21 11:28:43,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:43,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:43,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-21 11:28:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:43,726 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:43,727 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:43,727 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:43,727 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:43,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-21 11:28:43,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:43,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:28:43,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:43,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:43,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-09-21 11:28:43,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:43,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:28:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 396 proven. 142 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2020-09-21 11:28:44,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485642485] [2020-09-21 11:28:44,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:28:44,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:28:44,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844645269] [2020-09-21 11:28:44,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:28:44,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:44,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:28:44,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:28:44,141 INFO L87 Difference]: Start difference. First operand 2432 states and 2717 transitions. Second operand 7 states. [2020-09-21 11:28:45,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:45,513 INFO L93 Difference]: Finished difference Result 4678 states and 5259 transitions. [2020-09-21 11:28:45,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:28:45,514 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 552 [2020-09-21 11:28:45,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:45,525 INFO L225 Difference]: With dead ends: 4678 [2020-09-21 11:28:45,525 INFO L226 Difference]: Without dead ends: 2618 [2020-09-21 11:28:45,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:28:45,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2020-09-21 11:28:45,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2616. [2020-09-21 11:28:45,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2616 states. [2020-09-21 11:28:45,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2616 states to 2616 states and 2909 transitions. [2020-09-21 11:28:45,596 INFO L78 Accepts]: Start accepts. Automaton has 2616 states and 2909 transitions. Word has length 552 [2020-09-21 11:28:45,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:45,597 INFO L479 AbstractCegarLoop]: Abstraction has 2616 states and 2909 transitions. [2020-09-21 11:28:45,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:28:45,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2616 states and 2909 transitions. [2020-09-21 11:28:45,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2020-09-21 11:28:45,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:45,614 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:45,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:28:45,614 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:45,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:45,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1412629185, now seen corresponding path program 1 times [2020-09-21 11:28:45,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:45,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001334605] [2020-09-21 11:28:45,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:45,808 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:45,809 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:45,809 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:45,809 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:45,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 579 [2020-09-21 11:28:45,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:45,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-21 11:28:45,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:45,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-09-21 11:28:45,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-21 11:28:45,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-21 11:28:45,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:45,931 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:45,931 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:45,931 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:45,932 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:45,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:45,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:45,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:45,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:45,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:45,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:28:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:45,954 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:45,955 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:45,955 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:45,955 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:45,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 11:28:45,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:45,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:45,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:45,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:45,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:45,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:45,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:45,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 11:28:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:46,025 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:46,025 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:46,025 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:46,025 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:46,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 11:28:46,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:46,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:28:46,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 11:28:46,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:46,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 11:28:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:46,126 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:46,126 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:46,126 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:46,127 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:46,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 11:28:46,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:46,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:28:46,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:28:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-21 11:28:46,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:28:46,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-09-21 11:28:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:46,255 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:46,256 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:46,256 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:46,256 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:46,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 11:28:46,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:46,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:46,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:46,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:46,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-09-21 11:28:46,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:46,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 414 proven. 109 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2020-09-21 11:28:46,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001334605] [2020-09-21 11:28:46,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:28:46,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:28:46,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86447211] [2020-09-21 11:28:46,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:28:46,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:46,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:28:46,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:28:46,591 INFO L87 Difference]: Start difference. First operand 2616 states and 2909 transitions. Second operand 7 states. [2020-09-21 11:28:49,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:49,408 INFO L93 Difference]: Finished difference Result 5790 states and 6569 transitions. [2020-09-21 11:28:49,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:28:49,408 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 562 [2020-09-21 11:28:49,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:49,422 INFO L225 Difference]: With dead ends: 5790 [2020-09-21 11:28:49,422 INFO L226 Difference]: Without dead ends: 3546 [2020-09-21 11:28:49,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:28:49,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3546 states. [2020-09-21 11:28:49,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3546 to 2988. [2020-09-21 11:28:49,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2988 states. [2020-09-21 11:28:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2988 states to 2988 states and 3397 transitions. [2020-09-21 11:28:49,495 INFO L78 Accepts]: Start accepts. Automaton has 2988 states and 3397 transitions. Word has length 562 [2020-09-21 11:28:49,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:49,496 INFO L479 AbstractCegarLoop]: Abstraction has 2988 states and 3397 transitions. [2020-09-21 11:28:49,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:28:49,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2988 states and 3397 transitions. [2020-09-21 11:28:49,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2020-09-21 11:28:49,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:49,503 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:49,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:28:49,503 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:49,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:49,504 INFO L82 PathProgramCache]: Analyzing trace with hash 317976822, now seen corresponding path program 1 times [2020-09-21 11:28:49,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:49,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657135003] [2020-09-21 11:28:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:49,655 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:49,656 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:49,656 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:49,656 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:49,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 586 [2020-09-21 11:28:49,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:49,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:28:49,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 351 [2020-09-21 11:28:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-09-21 11:28:49,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:49,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:49,780 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:49,780 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:49,780 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:49,780 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:49,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:49,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:49,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:49,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:49,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:49,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:49,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:49,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:49,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:28:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:49,804 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:49,804 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:49,805 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:49,805 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:49,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 11:28:49,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:49,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:28:49,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:49,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:49,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:49,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:49,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:49,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 11:28:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:49,844 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:49,844 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:49,845 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:49,845 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:49,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 11:28:49,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:49,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:49,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:49,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:49,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 11:28:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:49,903 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:49,903 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:49,903 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:49,903 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:49,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 11:28:49,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:49,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:28:49,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-21 11:28:49,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:49,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 11:28:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:49,993 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:49,993 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:49,994 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:49,994 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:49,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 11:28:49,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:49,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:28:49,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:28:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 11:28:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 525 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2020-09-21 11:28:50,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657135003] [2020-09-21 11:28:50,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:28:50,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:28:50,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206993326] [2020-09-21 11:28:50,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:28:50,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:50,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:28:50,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:28:50,415 INFO L87 Difference]: Start difference. First operand 2988 states and 3397 transitions. Second operand 7 states. [2020-09-21 11:28:52,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:52,293 INFO L93 Difference]: Finished difference Result 6356 states and 7375 transitions. [2020-09-21 11:28:52,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:28:52,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 569 [2020-09-21 11:28:52,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:52,309 INFO L225 Difference]: With dead ends: 6356 [2020-09-21 11:28:52,310 INFO L226 Difference]: Without dead ends: 3924 [2020-09-21 11:28:52,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:28:52,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3924 states. [2020-09-21 11:28:52,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3924 to 3732. [2020-09-21 11:28:52,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3732 states. [2020-09-21 11:28:52,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 4200 transitions. [2020-09-21 11:28:52,463 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 4200 transitions. Word has length 569 [2020-09-21 11:28:52,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:52,464 INFO L479 AbstractCegarLoop]: Abstraction has 3732 states and 4200 transitions. [2020-09-21 11:28:52,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:28:52,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 4200 transitions. [2020-09-21 11:28:52,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2020-09-21 11:28:52,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:52,477 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:52,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:28:52,478 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:52,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:52,479 INFO L82 PathProgramCache]: Analyzing trace with hash -191343796, now seen corresponding path program 1 times [2020-09-21 11:28:52,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:52,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42902077] [2020-09-21 11:28:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:52,774 FATAL L256 erpolLogProxyWrapper]: Difference in size: 6 [2020-09-21 11:28:52,775 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -111 [2020-09-21 11:28:52,775 FATAL L256 erpolLogProxyWrapper]: Difference in width: 146 [2020-09-21 11:28:52,775 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:52,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 690 [2020-09-21 11:28:52,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:52,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-21 11:28:52,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:52,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:28:52,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-09-21 11:28:52,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-09-21 11:28:52,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:52,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:52,973 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:52,974 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:52,974 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:52,974 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:52,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:52,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:52,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:52,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:52,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:52,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:52,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:52,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:28:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:52,998 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:52,998 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:52,998 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:52,998 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:52,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 11:28:52,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:52,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:52,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:52,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:52,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:52,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:53,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:53,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 11:28:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:53,066 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:53,066 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:53,066 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:53,067 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:53,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 11:28:53,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:53,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:28:53,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 11:28:53,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:53,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 11:28:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:53,136 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:28:53,136 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:53,136 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:53,137 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:53,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 11:28:53,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:53,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:28:53,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:28:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-21 11:28:53,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:53,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 11:28:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:53,274 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:53,274 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:53,275 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:53,275 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:53,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 11:28:53,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:53,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 11:28:53,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:53,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:53,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:28:53,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-21 11:28:53,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:53,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-09-21 11:28:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:53,386 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:53,387 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:53,387 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:53,387 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:53,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-21 11:28:53,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:53,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:53,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:53,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:53,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-09-21 11:28:53,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:53,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:53,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2020-09-21 11:28:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:53,450 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:53,451 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:53,451 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:53,451 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:53,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-21 11:28:53,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:53,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:53,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-09-21 11:28:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:53,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 666 proven. 408 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2020-09-21 11:28:53,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42902077] [2020-09-21 11:28:53,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:28:53,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:28:53,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621351011] [2020-09-21 11:28:53,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:28:53,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:53,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:28:53,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:28:53,840 INFO L87 Difference]: Start difference. First operand 3732 states and 4200 transitions. Second operand 8 states. [2020-09-21 11:28:55,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:55,545 INFO L93 Difference]: Finished difference Result 7098 states and 8044 transitions. [2020-09-21 11:28:55,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:28:55,546 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 669 [2020-09-21 11:28:55,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:55,559 INFO L225 Difference]: With dead ends: 7098 [2020-09-21 11:28:55,560 INFO L226 Difference]: Without dead ends: 3922 [2020-09-21 11:28:55,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:28:55,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2020-09-21 11:28:55,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3920. [2020-09-21 11:28:55,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3920 states. [2020-09-21 11:28:55,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 4395 transitions. [2020-09-21 11:28:55,643 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 4395 transitions. Word has length 669 [2020-09-21 11:28:55,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:55,644 INFO L479 AbstractCegarLoop]: Abstraction has 3920 states and 4395 transitions. [2020-09-21 11:28:55,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:28:55,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 4395 transitions. [2020-09-21 11:28:55,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2020-09-21 11:28:55,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:55,653 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:55,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:28:55,654 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:55,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:55,654 INFO L82 PathProgramCache]: Analyzing trace with hash 326490438, now seen corresponding path program 1 times [2020-09-21 11:28:55,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:55,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67555817] [2020-09-21 11:28:55,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:55,961 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:55,961 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:55,961 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:55,961 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:55,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 747 [2020-09-21 11:28:55,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:55,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:28:55,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:55,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 512 [2020-09-21 11:28:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-09-21 11:28:55,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:56,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:56,147 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:56,148 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:56,148 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:56,148 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:56,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:56,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:56,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:56,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:56,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:56,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:56,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:56,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:56,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:28:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:56,174 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:56,174 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:56,174 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:56,175 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:56,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 11:28:56,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:56,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:56,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:56,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:56,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:56,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:56,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 11:28:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:56,215 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:56,215 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:56,216 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:56,216 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:56,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 11:28:56,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:56,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:56,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:56,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:56,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:56,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:56,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:56,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 11:28:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:56,262 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:56,262 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:56,262 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:56,262 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:56,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 11:28:56,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:56,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:56,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:56,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:56,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:56,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:56,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:56,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 11:28:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:56,356 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:56,357 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:56,357 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:56,357 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:56,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-21 11:28:56,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:56,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:28:56,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-21 11:28:56,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:56,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-09-21 11:28:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:56,471 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:56,471 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:56,471 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:56,472 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:56,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 11:28:56,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:56,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:28:56,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:56,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:56,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:28:56,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 11:28:56,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1394 backedges. 733 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-09-21 11:28:56,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67555817] [2020-09-21 11:28:56,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:28:56,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:28:56,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382649315] [2020-09-21 11:28:56,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:28:56,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:56,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:28:56,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:28:56,949 INFO L87 Difference]: Start difference. First operand 3920 states and 4395 transitions. Second operand 7 states. [2020-09-21 11:28:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:58,754 INFO L93 Difference]: Finished difference Result 8038 states and 9130 transitions. [2020-09-21 11:28:58,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:28:58,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 728 [2020-09-21 11:28:58,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:58,773 INFO L225 Difference]: With dead ends: 8038 [2020-09-21 11:28:58,774 INFO L226 Difference]: Without dead ends: 4858 [2020-09-21 11:28:58,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:28:58,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4858 states. [2020-09-21 11:28:58,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4858 to 4478. [2020-09-21 11:28:58,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4478 states. [2020-09-21 11:28:58,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 5036 transitions. [2020-09-21 11:28:58,878 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 5036 transitions. Word has length 728 [2020-09-21 11:28:58,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:58,879 INFO L479 AbstractCegarLoop]: Abstraction has 4478 states and 5036 transitions. [2020-09-21 11:28:58,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:28:58,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 5036 transitions. [2020-09-21 11:28:58,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2020-09-21 11:28:58,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:58,892 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:58,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:28:58,892 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:58,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:58,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1829937423, now seen corresponding path program 1 times [2020-09-21 11:28:58,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:58,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056138537] [2020-09-21 11:28:58,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:59,136 FATAL L256 erpolLogProxyWrapper]: Difference in size: 7 [2020-09-21 11:28:59,136 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -506 [2020-09-21 11:28:59,136 FATAL L256 erpolLogProxyWrapper]: Difference in width: 506 [2020-09-21 11:28:59,137 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:59,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 825 [2020-09-21 11:28:59,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:59,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 11:28:59,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:59,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 512 [2020-09-21 11:28:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-21 11:28:59,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:28:59,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:59,291 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:59,292 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:59,292 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:59,292 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:59,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:59,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:59,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:59,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:59,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:59,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:59,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:59,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:59,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:28:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:59,316 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:59,316 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:59,317 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:59,317 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:59,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 11:28:59,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:59,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:59,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:59,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:59,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 11:28:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:59,357 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:59,358 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:59,358 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:59,358 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:59,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 11:28:59,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:59,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:59,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:59,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:59,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:59,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:59,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 11:28:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:59,411 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:59,411 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:59,412 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:59,412 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:59,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 11:28:59,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:59,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:59,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:59,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:59,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 11:28:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:59,489 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:59,489 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:59,490 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:59,490 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:59,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-21 11:28:59,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:59,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:28:59,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:59,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:59,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-21 11:28:59,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:59,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-09-21 11:28:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:59,686 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:59,686 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:59,686 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:59,686 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:59,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 11:28:59,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:59,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:28:59,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:59,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:28:59,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:28:59,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 11:28:59,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:59,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-09-21 11:28:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:59,793 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:59,793 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:59,793 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:59,793 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:59,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 11:28:59,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:59,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:59,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-09-21 11:28:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:59,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1821 backedges. 605 proven. 75 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2020-09-21 11:29:00,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056138537] [2020-09-21 11:29:00,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:29:00,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:29:00,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981656462] [2020-09-21 11:29:00,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:29:00,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:29:00,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:29:00,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:29:00,418 INFO L87 Difference]: Start difference. First operand 4478 states and 5036 transitions. Second operand 8 states. [2020-09-21 11:29:02,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:29:02,825 INFO L93 Difference]: Finished difference Result 10260 states and 11591 transitions. [2020-09-21 11:29:02,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:29:02,826 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 804 [2020-09-21 11:29:02,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:29:02,845 INFO L225 Difference]: With dead ends: 10260 [2020-09-21 11:29:02,845 INFO L226 Difference]: Without dead ends: 6338 [2020-09-21 11:29:02,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:29:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6338 states. [2020-09-21 11:29:02,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6338 to 5964. [2020-09-21 11:29:02,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5964 states. [2020-09-21 11:29:02,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5964 states to 5964 states and 6596 transitions. [2020-09-21 11:29:02,964 INFO L78 Accepts]: Start accepts. Automaton has 5964 states and 6596 transitions. Word has length 804 [2020-09-21 11:29:02,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:29:02,965 INFO L479 AbstractCegarLoop]: Abstraction has 5964 states and 6596 transitions. [2020-09-21 11:29:02,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:29:02,965 INFO L276 IsEmpty]: Start isEmpty. Operand 5964 states and 6596 transitions. [2020-09-21 11:29:02,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2020-09-21 11:29:02,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:29:02,981 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:29:02,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:29:02,982 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:29:02,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:29:02,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1962007891, now seen corresponding path program 1 times [2020-09-21 11:29:02,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:29:02,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462705004] [2020-09-21 11:29:02,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:29:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:03,225 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:03,225 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:03,225 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:03,225 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:03,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 843 [2020-09-21 11:29:03,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:03,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:29:03,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:29:03,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 789 [2020-09-21 11:29:03,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:29:03,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:03,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:29:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:03,419 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:03,420 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:03,420 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:03,420 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:03,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:29:03,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:03,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:03,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:03,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:03,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:03,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:03,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:03,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:29:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:03,447 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:03,447 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:03,447 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:03,447 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:03,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 11:29:03,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:03,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:03,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:03,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:03,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:03,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 11:29:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:03,486 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:03,486 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:03,487 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:03,487 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:03,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 11:29:03,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:03,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:03,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:03,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:03,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:03,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:03,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:03,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 11:29:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:03,526 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:03,527 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:03,527 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:03,527 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:03,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 11:29:03,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:03,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:03,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:03,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:03,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:03,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:03,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:03,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 11:29:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:03,572 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:03,573 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:03,573 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:03,573 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:03,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-21 11:29:03,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:03,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:03,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:03,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:03,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-09-21 11:29:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:03,642 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:03,642 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:03,643 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:03,643 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:03,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 11:29:03,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:03,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:03,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:03,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:03,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:03,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:03,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:03,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-09-21 11:29:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:03,704 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:03,705 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:03,705 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:03,705 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:03,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 11:29:03,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:03,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:29:03,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:03,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:29:03,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:03,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-21 11:29:03,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1839 backedges. 291 proven. 6 refuted. 0 times theorem prover too weak. 1542 trivial. 0 not checked. [2020-09-21 11:29:04,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462705004] [2020-09-21 11:29:04,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:29:04,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 11:29:04,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125913953] [2020-09-21 11:29:04,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:29:04,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:29:04,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:29:04,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:29:04,384 INFO L87 Difference]: Start difference. First operand 5964 states and 6596 transitions. Second operand 5 states. [2020-09-21 11:29:05,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:29:05,844 INFO L93 Difference]: Finished difference Result 5966 states and 6597 transitions. [2020-09-21 11:29:05,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:29:05,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 822 [2020-09-21 11:29:05,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:29:05,864 INFO L225 Difference]: With dead ends: 5966 [2020-09-21 11:29:05,864 INFO L226 Difference]: Without dead ends: 5964 [2020-09-21 11:29:05,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:29:05,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5964 states. [2020-09-21 11:29:05,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5964 to 5964. [2020-09-21 11:29:05,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5964 states. [2020-09-21 11:29:05,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5964 states to 5964 states and 6594 transitions. [2020-09-21 11:29:05,962 INFO L78 Accepts]: Start accepts. Automaton has 5964 states and 6594 transitions. Word has length 822 [2020-09-21 11:29:05,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:29:05,963 INFO L479 AbstractCegarLoop]: Abstraction has 5964 states and 6594 transitions. [2020-09-21 11:29:05,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:29:05,964 INFO L276 IsEmpty]: Start isEmpty. Operand 5964 states and 6594 transitions. [2020-09-21 11:29:05,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2020-09-21 11:29:05,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:29:05,982 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:29:05,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 11:29:05,983 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:29:05,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:29:05,983 INFO L82 PathProgramCache]: Analyzing trace with hash 277730204, now seen corresponding path program 1 times [2020-09-21 11:29:05,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:29:05,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189572139] [2020-09-21 11:29:05,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:29:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:06,194 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:06,194 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:06,194 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:06,194 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:06,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 851 [2020-09-21 11:29:06,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:06,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:29:06,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:29:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 797 [2020-09-21 11:29:06,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:29:06,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:06,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:29:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:06,377 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:06,377 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:06,378 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:06,378 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:06,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:29:06,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:06,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:06,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:06,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:06,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:06,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:06,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:06,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:29:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:06,403 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:06,403 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:06,404 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:06,404 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:06,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 11:29:06,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:06,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:06,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:06,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:06,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 11:29:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:06,452 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:06,452 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:06,452 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:06,452 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:06,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 11:29:06,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:06,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:06,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:06,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:06,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:06,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:06,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:06,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 11:29:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:06,492 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:06,493 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:06,493 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:06,493 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:06,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 11:29:06,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:06,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:06,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:06,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:06,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:06,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:06,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:06,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 11:29:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:06,537 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:06,537 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:06,537 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:06,538 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:06,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-21 11:29:06,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:06,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:06,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:06,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:06,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:06,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:06,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:06,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-09-21 11:29:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:06,603 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:06,604 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:06,604 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:06,604 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:06,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 11:29:06,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:06,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:06,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:06,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:06,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:06,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:06,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:06,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-09-21 11:29:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:06,631 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:06,632 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:06,632 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:06,632 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:06,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-21 11:29:06,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:06,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:06,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:06,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:06,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:06,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:06,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-09-21 11:29:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:06,688 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:06,689 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:06,689 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:06,689 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:06,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-21 11:29:06,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:06,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:29:06,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:06,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:29:06,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:06,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-21 11:29:06,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2344 backedges. 340 proven. 7 refuted. 0 times theorem prover too weak. 1997 trivial. 0 not checked. [2020-09-21 11:29:07,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189572139] [2020-09-21 11:29:07,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:29:07,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 11:29:07,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63014851] [2020-09-21 11:29:07,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:29:07,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:29:07,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:29:07,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:29:07,065 INFO L87 Difference]: Start difference. First operand 5964 states and 6594 transitions. Second operand 5 states. [2020-09-21 11:29:08,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:29:08,378 INFO L93 Difference]: Finished difference Result 6518 states and 7189 transitions. [2020-09-21 11:29:08,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:29:08,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 828 [2020-09-21 11:29:08,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:29:08,399 INFO L225 Difference]: With dead ends: 6518 [2020-09-21 11:29:08,400 INFO L226 Difference]: Without dead ends: 6516 [2020-09-21 11:29:08,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:29:08,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6516 states. [2020-09-21 11:29:08,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6516 to 5782. [2020-09-21 11:29:08,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5782 states. [2020-09-21 11:29:08,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5782 states to 5782 states and 6405 transitions. [2020-09-21 11:29:08,508 INFO L78 Accepts]: Start accepts. Automaton has 5782 states and 6405 transitions. Word has length 828 [2020-09-21 11:29:08,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:29:08,509 INFO L479 AbstractCegarLoop]: Abstraction has 5782 states and 6405 transitions. [2020-09-21 11:29:08,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:29:08,509 INFO L276 IsEmpty]: Start isEmpty. Operand 5782 states and 6405 transitions. [2020-09-21 11:29:08,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2020-09-21 11:29:08,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:29:08,526 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:29:08,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 11:29:08,526 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:29:08,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:29:08,527 INFO L82 PathProgramCache]: Analyzing trace with hash 117494447, now seen corresponding path program 1 times [2020-09-21 11:29:08,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:29:08,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719049376] [2020-09-21 11:29:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:29:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:08,755 FATAL L256 erpolLogProxyWrapper]: Difference in size: 7 [2020-09-21 11:29:08,755 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -802 [2020-09-21 11:29:08,755 FATAL L256 erpolLogProxyWrapper]: Difference in width: 802 [2020-09-21 11:29:08,755 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:08,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 862 [2020-09-21 11:29:08,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:08,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 11:29:08,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:29:08,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 808 [2020-09-21 11:29:08,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:29:08,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:08,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:29:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:08,949 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:08,950 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:08,950 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:08,950 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:08,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:29:08,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:08,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:08,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:08,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:08,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:08,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:08,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:08,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:29:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:08,971 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:08,971 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:08,971 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:08,972 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:08,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 11:29:08,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:08,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:08,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:08,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:09,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 11:29:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:09,037 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:09,037 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:09,038 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:09,038 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:09,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 11:29:09,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:09,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:29:09,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:09,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:09,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:09,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:09,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:09,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 11:29:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:09,085 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:09,086 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:09,086 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:09,086 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:09,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 11:29:09,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:09,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:09,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:09,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:09,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:09,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:09,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:09,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 11:29:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:09,129 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:09,129 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:09,129 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:09,130 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:09,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-21 11:29:09,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:09,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:09,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:09,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:09,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-09-21 11:29:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:09,186 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:09,186 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:09,186 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:09,186 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:09,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 11:29:09,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:09,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:09,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:09,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:09,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-09-21 11:29:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:09,210 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:09,211 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:09,211 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:09,211 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:09,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-21 11:29:09,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:09,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:29:09,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:29:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:29:09,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:09,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-09-21 11:29:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:29:09,286 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:29:09,286 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:29:09,286 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:29:09,286 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:29:09,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-21 11:29:09,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:29:09,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:29:09,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:29:09,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:29:09,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:29:09,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-21 11:29:09,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:29:09,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2399 backedges. 340 proven. 7 refuted. 0 times theorem prover too weak. 2052 trivial. 0 not checked. [2020-09-21 11:29:09,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719049376] [2020-09-21 11:29:09,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:29:09,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 11:29:09,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430747579] [2020-09-21 11:29:09,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:29:09,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:29:09,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:29:09,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:29:09,744 INFO L87 Difference]: Start difference. First operand 5782 states and 6405 transitions. Second operand 6 states. [2020-09-21 11:29:11,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:29:11,502 INFO L93 Difference]: Finished difference Result 6158 states and 6817 transitions. [2020-09-21 11:29:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:29:11,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 839 [2020-09-21 11:29:11,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:29:11,504 INFO L225 Difference]: With dead ends: 6158 [2020-09-21 11:29:11,504 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:29:11,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:29:11,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:29:11,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:29:11,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:29:11,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:29:11,515 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 839 [2020-09-21 11:29:11,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:29:11,515 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:29:11,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:29:11,515 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:29:11,515 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:29:11,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 11:29:11,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:29:12,210 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-09-21 11:29:12,888 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-09-21 11:29:13,033 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-09-21 11:29:13,158 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61