/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_25x0-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:27:04,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:27:04,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:27:04,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:27:04,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:27:04,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:27:04,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:27:04,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:27:04,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:27:04,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:27:04,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:27:04,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:27:04,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:27:04,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:27:04,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:27:04,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:27:04,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:27:04,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:27:04,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:27:04,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:27:04,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:27:04,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:27:04,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:27:04,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:27:04,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:27:04,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:27:04,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:27:04,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:27:04,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:27:04,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:27:04,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:27:04,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:27:04,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:27:04,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:27:04,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:27:04,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:27:04,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:27:04,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:27:04,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:27:04,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:27:04,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:27:04,282 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 [2020-09-24 20:27:04,329 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:27:04,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:27:04,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:27:04,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:27:04,332 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:27:04,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:27:04,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:27:04,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:27:04,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:27:04,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:27:04,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:27:04,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:27:04,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:27:04,335 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:27:04,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:27:04,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:27:04,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:27:04,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:27:04,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:27:04,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:27:04,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:27:04,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:27:04,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:27:04,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:27:04,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:27:04,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:27:04,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:27:04,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:27:04,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:27:04,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:27:04,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:27:04,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:27:04,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:27:04,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:27:04,833 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:27:04,835 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_25x0-2.c [2020-09-24 20:27:04,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10567ecd4/c4cbfcfc773d4eb6a47cbfedbaea37ea/FLAG52da13110 [2020-09-24 20:27:05,434 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:27:05,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_25x0-2.c [2020-09-24 20:27:05,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10567ecd4/c4cbfcfc773d4eb6a47cbfedbaea37ea/FLAG52da13110 [2020-09-24 20:27:05,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10567ecd4/c4cbfcfc773d4eb6a47cbfedbaea37ea [2020-09-24 20:27:05,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:27:05,807 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:27:05,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:27:05,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:27:05,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:27:05,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:27:05" (1/1) ... [2020-09-24 20:27:05,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa107a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:05, skipping insertion in model container [2020-09-24 20:27:05,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:27:05" (1/1) ... [2020-09-24 20:27:05,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:27:05,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:27:06,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:27:06,066 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:27:06,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:27:06,104 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:27:06,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:06 WrapperNode [2020-09-24 20:27:06,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:27:06,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:27:06,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:27:06,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:27:06,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:06" (1/1) ... [2020-09-24 20:27:06,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:06" (1/1) ... [2020-09-24 20:27:06,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:06" (1/1) ... [2020-09-24 20:27:06,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:06" (1/1) ... [2020-09-24 20:27:06,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:06" (1/1) ... [2020-09-24 20:27:06,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:06" (1/1) ... [2020-09-24 20:27:06,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:06" (1/1) ... [2020-09-24 20:27:06,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:27:06,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:27:06,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:27:06,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:27:06,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:06" (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 [2020-09-24 20:27:06,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:27:06,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:27:06,310 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-24 20:27:06,310 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:27:06,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:27:06,310 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-24 20:27:06,310 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:27:06,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:27:06,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:27:06,525 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:27:06,526 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:27:06,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:27:06 BoogieIcfgContainer [2020-09-24 20:27:06,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:27:06,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:27:06,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:27:06,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:27:06,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:27:05" (1/3) ... [2020-09-24 20:27:06,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6e7e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:27:06, skipping insertion in model container [2020-09-24 20:27:06,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:27:06" (2/3) ... [2020-09-24 20:27:06,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6e7e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:27:06, skipping insertion in model container [2020-09-24 20:27:06,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:27:06" (3/3) ... [2020-09-24 20:27:06,571 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_25x0-2.c [2020-09-24 20:27:06,601 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:27:06,622 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:27:06,654 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:27:06,684 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:27:06,684 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:27:06,684 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:27:06,684 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:27:06,685 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:27:06,685 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:27:06,685 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:27:06,685 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:27:06,705 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-24 20:27:06,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-24 20:27:06,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:27:06,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:27:06,715 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:27:06,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:27:06,721 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-24 20:27:06,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:27:06,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988228035] [2020-09-24 20:27:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:27:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:06,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:06,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:07,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:07,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 20:27:07,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:07,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-24 20:27:07,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:07,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:27:07,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:27:07,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:27:07,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:27:07,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:27:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:07,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:07,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:07,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:27:07,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:07,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:27:07,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:07,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:27:07,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:27:07,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:07,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:27:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:07,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:07,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:07,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:07,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:27:07,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:07,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 20:27:07,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:07,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:27:07,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:07,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:27:07,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:27:07,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988228035] [2020-09-24 20:27:07,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:27:07,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:27:07,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322777006] [2020-09-24 20:27:07,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:27:07,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:27:07,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:27:07,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:27:07,360 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 8 states. [2020-09-24 20:27:07,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:27:07,564 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-24 20:27:07,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:27:07,567 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-09-24 20:27:07,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:27:07,581 INFO L225 Difference]: With dead ends: 39 [2020-09-24 20:27:07,581 INFO L226 Difference]: Without dead ends: 25 [2020-09-24 20:27:07,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:27:07,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-24 20:27:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-24 20:27:07,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-24 20:27:07,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-24 20:27:07,637 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-24 20:27:07,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:27:07,637 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-24 20:27:07,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:27:07,638 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-24 20:27:07,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 20:27:07,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:27:07,640 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:27:07,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:27:07,641 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:27:07,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:27:07,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-24 20:27:07,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:27:07,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835118664] [2020-09-24 20:27:07,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:27:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:07,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:08,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:08,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 20:27:08,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:08,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-09-24 20:27:08,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:27:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:27:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:27:08,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:08,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:27:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:08,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:08,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:08,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:27:08,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:08,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:27:08,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:27:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:27:08,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:27:08,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:27:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:08,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:08,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:08,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:08,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:27:08,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:08,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-24 20:27:08,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:08,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:27:08,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:08,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:27:08,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:08,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:08,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:08,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:08,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:27:08,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:08,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 20:27:08,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:08,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:27:08,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:08,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:27:08,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 20:27:08,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835118664] [2020-09-24 20:27:08,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:27:08,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 20:27:08,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992511255] [2020-09-24 20:27:08,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:27:08,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:27:08,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:27:08,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:27:08,708 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 10 states. [2020-09-24 20:27:08,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:27:08,870 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-24 20:27:08,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:27:08,870 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-09-24 20:27:08,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:27:08,872 INFO L225 Difference]: With dead ends: 36 [2020-09-24 20:27:08,872 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 20:27:08,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:27:08,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 20:27:08,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 20:27:08,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 20:27:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-24 20:27:08,881 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-24 20:27:08,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:27:08,882 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-24 20:27:08,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:27:08,882 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-24 20:27:08,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 20:27:08,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:27:08,883 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:27:08,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:27:08,884 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:27:08,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:27:08,885 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-24 20:27:08,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:27:08,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874437932] [2020-09-24 20:27:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:27:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:08,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:08,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:09,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:09,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 20:27:09,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:09,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-09-24 20:27:09,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:27:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:27:09,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 20:27:09,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:09,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:27:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:09,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:09,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:09,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:27:09,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:09,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:27:09,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:27:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:27:09,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:09,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:27:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:09,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:09,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:10,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:10,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:27:10,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:10,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-09-24 20:27:10,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:10,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:27:10,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:10,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:27:10,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:10,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:10,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:10,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:10,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:27:10,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:10,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 20:27:10,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:10,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:27:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:27:10,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:10,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:10,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:10,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:10,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:27:10,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:10,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:27:10,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:27:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:27:10,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:10,351 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 20:27:10,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874437932] [2020-09-24 20:27:10,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:27:10,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 20:27:10,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57894192] [2020-09-24 20:27:10,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:27:10,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:27:10,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:27:10,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:27:10,357 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 13 states. [2020-09-24 20:27:10,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:27:10,624 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-09-24 20:27:10,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 20:27:10,625 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-09-24 20:27:10,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:27:10,626 INFO L225 Difference]: With dead ends: 41 [2020-09-24 20:27:10,627 INFO L226 Difference]: Without dead ends: 35 [2020-09-24 20:27:10,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2020-09-24 20:27:10,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-24 20:27:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-24 20:27:10,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-24 20:27:10,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-24 20:27:10,635 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-09-24 20:27:10,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:27:10,636 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-24 20:27:10,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:27:10,636 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-24 20:27:10,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 20:27:10,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:27:10,638 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:27:10,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:27:10,639 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:27:10,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:27:10,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-09-24 20:27:10,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:27:10,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655293554] [2020-09-24 20:27:10,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:27:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:10,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:10,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:11,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:11,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 20:27:11,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:11,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 774 [2020-09-24 20:27:11,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 20:27:11,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:27:11,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 20:27:11,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:11,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:27:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:11,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:11,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:11,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:27:11,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:11,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:27:11,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:11,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:27:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:27:11,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:11,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:27:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:11,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:11,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:12,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:12,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:27:12,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-09-24 20:27:12,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:12,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:27:12,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:12,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:27:12,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:12,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:12,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:12,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:12,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:27:12,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:12,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-24 20:27:12,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:27:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:27:12,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:12,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:12,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:12,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:12,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:27:12,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:12,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 20:27:12,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:27:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:27:12,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:12,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:12,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:12,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:12,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:27:12,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:12,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 20:27:12,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:12,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:27:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:27:12,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 20:27:12,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655293554] [2020-09-24 20:27:12,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:27:12,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 20:27:12,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733756531] [2020-09-24 20:27:12,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 20:27:12,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:27:12,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 20:27:12,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:27:12,802 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 15 states. [2020-09-24 20:27:13,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:27:13,177 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-24 20:27:13,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 20:27:13,178 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-09-24 20:27:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:27:13,180 INFO L225 Difference]: With dead ends: 46 [2020-09-24 20:27:13,180 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 20:27:13,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2020-09-24 20:27:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 20:27:13,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-24 20:27:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 20:27:13,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-24 20:27:13,190 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-09-24 20:27:13,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:27:13,191 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-24 20:27:13,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 20:27:13,191 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-24 20:27:13,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 20:27:13,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:27:13,193 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:27:13,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:27:13,194 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:27:13,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:27:13,194 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-09-24 20:27:13,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:27:13,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727910886] [2020-09-24 20:27:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:27:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:13,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:13,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:15,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:15,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:27:15,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:15,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1995 [2020-09-24 20:27:15,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:15,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 20:27:15,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:27:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-24 20:27:15,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:15,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:27:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:15,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:15,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:15,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:27:15,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:15,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:27:15,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:27:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:27:15,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:15,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:27:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:15,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:15,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:16,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:16,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:27:16,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:16,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1445 [2020-09-24 20:27:16,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:27:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 20:27:16,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:16,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:16,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:17,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:17,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:27:17,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:17,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-24 20:27:17,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:27:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:27:17,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:17,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:17,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:17,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:17,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:27:17,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:17,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-24 20:27:17,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:27:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:27:17,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:17,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:17,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:17,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:17,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:27:17,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:17,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 20:27:17,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:27:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:27:17,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:17,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:17,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:17,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:17,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:27:17,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:17,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:27:17,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:27:17,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:17,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:27:17,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:17,544 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 20:27:17,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727910886] [2020-09-24 20:27:17,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:27:17,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 20:27:17,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618699018] [2020-09-24 20:27:17,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 20:27:17,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:27:17,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 20:27:17,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:27:17,547 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 17 states. [2020-09-24 20:27:17,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:27:17,894 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-24 20:27:17,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 20:27:17,894 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-09-24 20:27:17,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:27:17,896 INFO L225 Difference]: With dead ends: 51 [2020-09-24 20:27:17,896 INFO L226 Difference]: Without dead ends: 45 [2020-09-24 20:27:17,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=913, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 20:27:17,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-24 20:27:17,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-24 20:27:17,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 20:27:17,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-24 20:27:17,910 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-09-24 20:27:17,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:27:17,911 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-24 20:27:17,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 20:27:17,911 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-24 20:27:17,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 20:27:17,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:27:17,917 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:27:17,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:27:17,918 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:27:17,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:27:17,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-09-24 20:27:17,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:27:17,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617572477] [2020-09-24 20:27:17,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:27:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:17,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:18,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:21,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:21,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 20:27:21,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:21,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3578 [2020-09-24 20:27:21,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:21,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 20:27:21,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:27:21,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 20:27:21,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:21,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:27:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:21,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:21,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:21,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:27:21,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:21,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:27:21,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:27:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:27:21,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:21,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:27:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:21,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:21,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:23,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:23,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 20:27:23,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:23,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1973 [2020-09-24 20:27:23,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 20:27:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 20:27:23,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:23,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:23,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:23,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:23,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:27:23,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:23,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-09-24 20:27:23,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:23,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:27:23,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:23,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 20:27:23,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:24,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:24,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:24,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:24,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:27:24,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:24,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-24 20:27:24,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:24,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:27:24,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:24,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:27:24,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:24,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:24,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:24,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:24,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:27:24,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:24,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-24 20:27:24,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:27:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:24,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:27:24,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:24,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:24,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:24,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:24,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:27:24,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:24,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 20:27:24,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:24,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:27:24,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:24,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:27:24,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:24,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:24,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:24,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:24,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:27:24,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:24,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:27:24,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:27:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:24,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:27:24,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 6 proven. 68 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 20:27:24,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617572477] [2020-09-24 20:27:24,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:27:24,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 20:27:24,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664894533] [2020-09-24 20:27:24,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 20:27:24,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:27:24,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 20:27:24,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-09-24 20:27:24,761 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 19 states. [2020-09-24 20:27:25,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:27:25,184 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-09-24 20:27:25,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 20:27:25,184 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-09-24 20:27:25,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:27:25,188 INFO L225 Difference]: With dead ends: 56 [2020-09-24 20:27:25,189 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 20:27:25,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=278, Invalid=1204, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 20:27:25,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 20:27:25,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-24 20:27:25,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 20:27:25,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-24 20:27:25,201 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-09-24 20:27:25,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:27:25,204 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-24 20:27:25,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 20:27:25,204 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-24 20:27:25,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 20:27:25,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:27:25,206 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:27:25,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:27:25,206 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:27:25,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:27:25,208 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-09-24 20:27:25,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:27:25,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662106265] [2020-09-24 20:27:25,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:27:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:25,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:25,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:28,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:28,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-24 20:27:28,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:28,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3364 [2020-09-24 20:27:28,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:28,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 20:27:28,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:27:28,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 20:27:28,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:28,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:27:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:28,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:28,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:28,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:27:28,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:28,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:27:28,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:28,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:27:28,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:28,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:27:28,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:28,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:27:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:28,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:28,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:31,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:31,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 20:27:31,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:31,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2391 [2020-09-24 20:27:31,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:31,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 20:27:31,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:31,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 20:27:31,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:31,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:31,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:31,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:31,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 20:27:31,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:31,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-09-24 20:27:31,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:31,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 20:27:31,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:31,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 20:27:31,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:31,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:31,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:31,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:31,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:27:31,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:31,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-09-24 20:27:31,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:27:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:31,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 20:27:31,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:31,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:31,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:32,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:32,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:27:32,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:32,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-24 20:27:32,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:32,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:27:32,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:32,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:27:32,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:32,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:32,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:32,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:32,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:27:32,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:32,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-24 20:27:32,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:32,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:27:32,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:32,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:27:32,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:32,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:32,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:32,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:32,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:27:32,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:32,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 20:27:32,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:32,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:27:32,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:32,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:27:32,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:32,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:32,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:32,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:32,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:27:32,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:32,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:27:32,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:27:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:32,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:27:32,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:32,699 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 6 proven. 101 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-09-24 20:27:32,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662106265] [2020-09-24 20:27:32,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:27:32,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 20:27:32,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012567722] [2020-09-24 20:27:32,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 20:27:32,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:27:32,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 20:27:32,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:27:32,702 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-24 20:27:33,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:27:33,249 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-24 20:27:33,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 20:27:33,250 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-24 20:27:33,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:27:33,252 INFO L225 Difference]: With dead ends: 61 [2020-09-24 20:27:33,252 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 20:27:33,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=358, Invalid=1534, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 20:27:33,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 20:27:33,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-24 20:27:33,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 20:27:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-09-24 20:27:33,260 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-09-24 20:27:33,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:27:33,260 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-09-24 20:27:33,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 20:27:33,261 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-09-24 20:27:33,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 20:27:33,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:27:33,262 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:27:33,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:27:33,262 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:27:33,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:27:33,262 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-09-24 20:27:33,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:27:33,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249989962] [2020-09-24 20:27:33,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:27:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:33,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:33,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:37,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:37,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 20:27:37,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:37,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4480 [2020-09-24 20:27:37,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-24 20:27:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:27:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 20:27:37,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:37,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:27:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:37,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:37,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:27:37,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:37,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:27:37,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:27:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:27:37,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:37,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:27:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:37,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:38,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:41,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:41,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 20:27:41,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:41,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3883 [2020-09-24 20:27:41,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:41,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-24 20:27:41,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:41,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 20:27:41,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:41,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:41,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:42,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:42,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 20:27:42,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:42,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-09-24 20:27:42,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:42,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 20:27:42,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:42,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 20:27:42,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:42,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:42,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:42,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:42,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 20:27:42,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:42,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-09-24 20:27:42,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 20:27:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 20:27:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:42,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:42,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:43,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:43,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:27:43,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:43,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-24 20:27:43,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:27:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 20:27:43,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:43,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:43,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:43,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:43,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:27:43,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:43,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-24 20:27:43,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:27:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:27:43,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:43,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:43,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:43,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:27:43,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:43,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-24 20:27:43,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:27:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:27:43,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:43,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:43,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:43,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:43,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:27:43,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:43,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 20:27:43,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:27:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:27:43,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:43,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:43,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:43,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:43,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:27:43,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:43,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 20:27:43,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:27:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:27:43,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:27:43,933 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 11 proven. 133 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-24 20:27:43,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249989962] [2020-09-24 20:27:43,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:27:43,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 20:27:43,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662304761] [2020-09-24 20:27:43,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 20:27:43,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:27:43,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 20:27:43,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-09-24 20:27:43,935 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 23 states. [2020-09-24 20:27:44,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:27:44,516 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-09-24 20:27:44,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 20:27:44,517 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 81 [2020-09-24 20:27:44,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:27:44,518 INFO L225 Difference]: With dead ends: 66 [2020-09-24 20:27:44,519 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 20:27:44,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=445, Invalid=1811, Unknown=0, NotChecked=0, Total=2256 [2020-09-24 20:27:44,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 20:27:44,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-24 20:27:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 20:27:44,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-24 20:27:44,527 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-09-24 20:27:44,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:27:44,527 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-24 20:27:44,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 20:27:44,528 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-24 20:27:44,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-24 20:27:44,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:27:44,529 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:27:44,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:27:44,529 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:27:44,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:27:44,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-09-24 20:27:44,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:27:44,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905539781] [2020-09-24 20:27:44,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:27:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:44,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:44,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:49,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:49,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 20:27:49,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:49,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:27:49,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-24 20:27:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:27:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 20:27:49,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:49,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:27:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:49,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:49,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:49,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:27:49,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:49,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:27:49,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:49,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:27:49,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:49,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:27:49,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:49,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:27:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:49,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:49,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:54,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:54,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 20:27:54,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:27:54,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 20:27:54,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:54,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-09-24 20:27:54,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:54,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 20:27:54,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:54,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:54,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:55,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:55,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 20:27:55,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:55,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-09-24 20:27:55,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-24 20:27:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 20:27:55,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:55,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:55,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:56,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:56,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 20:27:56,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:56,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-09-24 20:27:56,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 20:27:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 20:27:56,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:56,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:56,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:56,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:56,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 20:27:56,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-09-24 20:27:56,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 20:27:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 20:27:56,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:56,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:56,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:56,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:56,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:27:56,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:56,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-09-24 20:27:56,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:27:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 20:27:56,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:56,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:56,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:57,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:57,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:27:57,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:57,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-24 20:27:57,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:27:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:27:57,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:57,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:57,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:57,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:57,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:27:57,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:57,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-24 20:27:57,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:27:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:27:57,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:57,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:57,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:57,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:57,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:27:57,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:57,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 20:27:57,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:27:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:27:57,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:57,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:27:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:57,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:57,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:27:57,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:27:57,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:27:57,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:27:57,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:27:57,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:27:57,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:27:57,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:27:57,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:27:57,560 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 8 proven. 174 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-09-24 20:27:57,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905539781] [2020-09-24 20:27:57,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:27:57,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 20:27:57,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649244854] [2020-09-24 20:27:57,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 20:27:57,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:27:57,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 20:27:57,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2020-09-24 20:27:57,562 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 25 states. [2020-09-24 20:27:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:27:58,253 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-24 20:27:58,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 20:27:58,253 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 90 [2020-09-24 20:27:58,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:27:58,255 INFO L225 Difference]: With dead ends: 71 [2020-09-24 20:27:58,255 INFO L226 Difference]: Without dead ends: 65 [2020-09-24 20:27:58,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=551, Invalid=2311, Unknown=0, NotChecked=0, Total=2862 [2020-09-24 20:27:58,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-24 20:27:58,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-24 20:27:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 20:27:58,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-09-24 20:27:58,264 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-09-24 20:27:58,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:27:58,264 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-09-24 20:27:58,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 20:27:58,265 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-09-24 20:27:58,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-24 20:27:58,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:27:58,266 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:27:58,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:27:58,266 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:27:58,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:27:58,267 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-09-24 20:27:58,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:27:58,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070410008] [2020-09-24 20:27:58,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:27:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:27:58,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:27:58,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking...