/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=NARROWEST --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_25x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:04:28,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:04:28,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:04:28,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:04:28,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:04:28,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:04:28,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:04:28,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:04:28,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:04:28,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:04:28,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:04:28,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:04:28,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:04:28,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:04:28,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:04:28,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:04:28,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:04:28,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:04:28,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:04:28,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:04:28,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:04:28,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:04:28,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:04:28,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:04:28,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:04:28,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:04:28,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:04:28,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:04:28,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:04:28,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:04:28,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:04:28,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:04:28,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:04:28,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:04:28,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:04:28,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:04:28,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:04:28,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:04:28,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:04:28,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:04:28,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:04:28,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:04:28,384 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:04:28,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:04:28,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:04:28,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:04:28,387 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:04:28,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:04:28,387 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:04:28,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:04:28,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:04:28,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:04:28,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:04:28,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:04:28,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:04:28,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:04:28,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:04:28,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:04:28,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:04:28,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:04:28,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:04:28,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:04:28,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:04:28,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:04:28,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:04:28,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:04:28,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:04:28,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:04:28,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:04:28,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:04:28,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:04:28,392 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:04:28,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:04:28,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:04:28,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:04:28,917 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:04:28,918 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:04:28,920 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_25x0-1.c [2020-09-25 02:04:29,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3fc9fcd6/09447221598d48d49cdba0b633cdd138/FLAG598247e0c [2020-09-25 02:04:29,565 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:04:29,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_25x0-1.c [2020-09-25 02:04:29,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3fc9fcd6/09447221598d48d49cdba0b633cdd138/FLAG598247e0c [2020-09-25 02:04:29,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3fc9fcd6/09447221598d48d49cdba0b633cdd138 [2020-09-25 02:04:29,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:04:29,926 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:04:29,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:04:29,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:04:29,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:04:29,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:04:29" (1/1) ... [2020-09-25 02:04:29,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa69d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:29, skipping insertion in model container [2020-09-25 02:04:29,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:04:29" (1/1) ... [2020-09-25 02:04:29,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:04:29,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:04:30,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:04:30,181 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:04:30,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:04:30,217 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:04:30,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:30 WrapperNode [2020-09-25 02:04:30,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:04:30,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:04:30,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:04:30,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:04:30,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:30" (1/1) ... [2020-09-25 02:04:30,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:30" (1/1) ... [2020-09-25 02:04:30,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:30" (1/1) ... [2020-09-25 02:04:30,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:30" (1/1) ... [2020-09-25 02:04:30,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:30" (1/1) ... [2020-09-25 02:04:30,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:30" (1/1) ... [2020-09-25 02:04:30,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:30" (1/1) ... [2020-09-25 02:04:30,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:04:30,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:04:30,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:04:30,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:04:30,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:04:30,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:04:30,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:04:30,425 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-25 02:04:30,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:04:30,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:04:30,425 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-25 02:04:30,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:04:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:04:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:04:30,641 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:04:30,641 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:04:30,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:04:30 BoogieIcfgContainer [2020-09-25 02:04:30,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:04:30,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:04:30,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:04:30,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:04:30,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:04:29" (1/3) ... [2020-09-25 02:04:30,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5475a45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:04:30, skipping insertion in model container [2020-09-25 02:04:30,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:30" (2/3) ... [2020-09-25 02:04:30,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5475a45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:04:30, skipping insertion in model container [2020-09-25 02:04:30,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:04:30" (3/3) ... [2020-09-25 02:04:30,656 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_25x0-1.c [2020-09-25 02:04:30,668 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:04:30,679 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:04:30,729 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:04:30,801 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:04:30,802 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:04:30,802 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:04:30,802 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:04:30,803 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:04:30,803 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:04:30,803 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:04:30,803 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:04:30,827 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 02:04:30,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 02:04:30,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:30,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:30,838 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:30,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:30,846 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-25 02:04:30,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:30,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159670617] [2020-09-25 02:04:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:31,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:31,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:31,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:31,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 02:04:31,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:31,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-09-25 02:04:31,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:04:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:04:31,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:04:31,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:31,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:31,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:31,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:31,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:31,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:04:31,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:31,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:31,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:31,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:31,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:31,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:31,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:31,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 02:04:31,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:31,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:04:31,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:31,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:04:31,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:04:31,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159670617] [2020-09-25 02:04:31,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:04:31,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:04:31,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977741100] [2020-09-25 02:04:31,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:04:31,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:31,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:04:31,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:04:31,581 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-25 02:04:31,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:31,718 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-25 02:04:31,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:04:31,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 02:04:31,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:31,735 INFO L225 Difference]: With dead ends: 39 [2020-09-25 02:04:31,735 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 02:04:31,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:04:31,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 02:04:31,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-25 02:04:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 02:04:31,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-25 02:04:31,796 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-25 02:04:31,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:31,796 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-25 02:04:31,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:04:31,797 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-25 02:04:31,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 02:04:31,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:31,799 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:31,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:04:31,800 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:31,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:31,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-25 02:04:31,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:31,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556348264] [2020-09-25 02:04:31,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:31,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:31,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:32,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:32,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:04:32,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:32,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-09-25 02:04:32,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:04:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:04:32,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:32,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:32,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:32,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:32,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:32,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:32,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:32,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:32,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:32,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:32,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:32,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:32,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:32,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:32,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:32,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:32,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:32,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 02:04:32,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:32,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:04:32,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:32,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:04:32,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:32,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:32,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:32,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:32,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:32,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:32,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 02:04:32,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:32,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:32,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:32,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:32,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:04:32,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556348264] [2020-09-25 02:04:32,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:32,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:04:32,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683648285] [2020-09-25 02:04:32,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:04:32,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:32,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:04:32,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:04:32,546 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 7 states. [2020-09-25 02:04:32,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:32,630 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-25 02:04:32,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:04:32,631 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-25 02:04:32,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:32,632 INFO L225 Difference]: With dead ends: 36 [2020-09-25 02:04:32,632 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:04:32,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:04:32,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:04:32,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 02:04:32,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 02:04:32,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 02:04:32,650 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-25 02:04:32,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:32,651 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 02:04:32,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:04:32,652 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 02:04:32,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 02:04:32,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:32,655 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:32,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:04:32,656 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:32,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:32,656 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-25 02:04:32,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:32,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94174103] [2020-09-25 02:04:32,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:32,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:32,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:33,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 02:04:33,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:33,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-09-25 02:04:33,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:33,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:04:33,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:33,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:33,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:33,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:33,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:33,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:33,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:33,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:04:33,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:33,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:33,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:33,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:33,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:33,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:33,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:33,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:33,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:33,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 02:04:33,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:33,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:04:33,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:33,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:04:33,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:33,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:33,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:33,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:33,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:33,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 02:04:33,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:33,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:33,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:33,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:33,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:33,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:33,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:04:33,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:33,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:33,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:33,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:33,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:33,603 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 02:04:33,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94174103] [2020-09-25 02:04:33,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:33,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:04:33,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440770995] [2020-09-25 02:04:33,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:04:33,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:33,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:04:33,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:04:33,606 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 7 states. [2020-09-25 02:04:33,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:33,683 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-09-25 02:04:33,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:04:33,684 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 02:04:33,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:33,685 INFO L225 Difference]: With dead ends: 41 [2020-09-25 02:04:33,686 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 02:04:33,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:04:33,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 02:04:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-25 02:04:33,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 02:04:33,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-25 02:04:33,695 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-09-25 02:04:33,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:33,695 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-25 02:04:33,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:04:33,696 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-25 02:04:33,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 02:04:33,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:33,698 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:33,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:04:33,698 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:33,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:33,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-09-25 02:04:33,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:33,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132215308] [2020-09-25 02:04:33,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:33,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 02:04:34,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:34,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 829 [2020-09-25 02:04:34,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:04:34,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 02:04:34,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:34,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:34,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:34,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:34,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:34,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:34,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:34,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:34,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 02:04:34,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:04:34,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:34,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 02:04:34,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:34,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:34,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:34,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 02:04:34,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:34,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:34,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:34,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:34,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 02:04:34,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:34,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:34,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:34,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:34,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:34,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:04:34,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:34,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:34,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:34,986 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 02:04:34,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132215308] [2020-09-25 02:04:34,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:34,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:04:34,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457513955] [2020-09-25 02:04:34,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:04:34,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:34,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:04:34,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:04:34,989 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states. [2020-09-25 02:04:35,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:35,072 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-25 02:04:35,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:04:35,072 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 02:04:35,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:35,074 INFO L225 Difference]: With dead ends: 46 [2020-09-25 02:04:35,074 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 02:04:35,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:04:35,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 02:04:35,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 02:04:35,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:04:35,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-25 02:04:35,082 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-09-25 02:04:35,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:35,083 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-25 02:04:35,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:04:35,093 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-25 02:04:35,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 02:04:35,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:35,095 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:35,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:04:35,096 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:35,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:35,096 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-09-25 02:04:35,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:35,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187871224] [2020-09-25 02:04:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:35,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:35,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:36,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 02:04:36,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:36,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1140 [2020-09-25 02:04:36,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:36,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:04:36,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:36,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 02:04:36,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:36,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:36,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:36,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:36,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:36,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:36,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:36,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:36,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:36,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:36,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:36,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:36,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:36,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:36,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:36,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 02:04:36,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:36,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:04:36,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:36,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:04:36,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:36,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:36,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:36,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:36,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:36,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 02:04:36,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:36,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:36,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:36,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:36,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:36,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:36,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:36,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 02:04:36,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:36,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:36,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:36,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:36,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:36,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:36,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:36,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 02:04:36,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:36,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:36,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:36,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:36,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:36,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:36,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:36,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:36,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:04:36,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:36,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:36,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:36,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:36,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 02:04:36,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187871224] [2020-09-25 02:04:36,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:36,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:04:36,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238995565] [2020-09-25 02:04:36,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:04:36,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:36,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:04:36,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:04:36,964 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 10 states. [2020-09-25 02:04:37,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:37,065 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 02:04:37,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:04:37,066 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-09-25 02:04:37,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:37,067 INFO L225 Difference]: With dead ends: 51 [2020-09-25 02:04:37,068 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 02:04:37,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:04:37,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 02:04:37,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 02:04:37,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 02:04:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-25 02:04:37,076 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-09-25 02:04:37,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:37,076 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-25 02:04:37,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:04:37,076 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-25 02:04:37,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 02:04:37,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:37,078 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:37,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:04:37,078 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:37,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:37,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-09-25 02:04:37,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:37,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782032456] [2020-09-25 02:04:37,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:37,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:37,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:38,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:38,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 02:04:38,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:38,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1648 [2020-09-25 02:04:38,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:38,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:04:38,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:38,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:04:38,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:38,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:38,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:38,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:38,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:38,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:38,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:38,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:38,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:38,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:38,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:38,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:38,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:38,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:39,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:39,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:39,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:39,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-25 02:04:39,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:39,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:04:39,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 02:04:39,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:39,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:39,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:39,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:39,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:39,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:39,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 02:04:39,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:39,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:39,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:39,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:39,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:39,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:39,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:39,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:39,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:39,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:39,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 02:04:39,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:39,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:39,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:39,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:39,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:39,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:39,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:39,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:39,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:39,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:39,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 02:04:39,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:39,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:39,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:39,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:39,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:39,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:39,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:39,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:39,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:39,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:39,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 02:04:39,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:39,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:39,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:39,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:39,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:39,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:39,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:39,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:39,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:39,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:04:39,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:39,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:39,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:39,854 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-25 02:04:39,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782032456] [2020-09-25 02:04:39,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:39,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:04:39,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993095554] [2020-09-25 02:04:39,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:04:39,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:39,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:04:39,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:04:39,859 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 10 states. [2020-09-25 02:04:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:40,053 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-09-25 02:04:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 02:04:40,054 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-09-25 02:04:40,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:40,057 INFO L225 Difference]: With dead ends: 56 [2020-09-25 02:04:40,057 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 02:04:40,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:04:40,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 02:04:40,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 02:04:40,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 02:04:40,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 02:04:40,075 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-09-25 02:04:40,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:40,079 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 02:04:40,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:04:40,079 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 02:04:40,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 02:04:40,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:40,084 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:40,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:04:40,084 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:40,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:40,085 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-09-25 02:04:40,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:40,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065070549] [2020-09-25 02:04:40,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:40,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:40,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:42,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:42,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-25 02:04:42,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:42,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1922 [2020-09-25 02:04:42,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:42,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:04:42,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:42,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 02:04:42,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:42,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:42,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:42,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:42,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:42,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:42,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:42,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:42,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:42,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:42,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:42,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:42,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:42,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:04:42,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:42,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-09-25 02:04:42,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:42,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:04:42,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:42,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 02:04:42,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:42,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:42,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:42,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:42,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:42,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:42,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-25 02:04:42,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:42,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:42,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:42,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:04:42,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:42,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:42,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:43,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:43,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:43,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:43,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 02:04:43,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:43,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:43,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:43,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:43,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:43,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:43,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:43,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:43,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:43,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:43,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 02:04:43,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:43,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:43,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:43,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:43,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:43,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:43,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:43,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:43,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:43,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:43,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 02:04:43,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:43,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:43,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:43,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:43,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:43,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:43,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:43,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 02:04:43,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:43,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:43,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:43,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:43,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:43,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:43,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:43,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:04:43,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:43,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:43,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:43,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:43,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 15 proven. 100 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 02:04:43,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065070549] [2020-09-25 02:04:43,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:43,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 02:04:43,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420062477] [2020-09-25 02:04:43,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:04:43,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:43,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:04:43,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:04:43,516 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 12 states. [2020-09-25 02:04:43,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:43,650 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-25 02:04:43,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:04:43,651 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-25 02:04:43,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:43,653 INFO L225 Difference]: With dead ends: 61 [2020-09-25 02:04:43,653 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 02:04:43,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-25 02:04:43,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 02:04:43,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 02:04:43,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 02:04:43,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-09-25 02:04:43,660 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-09-25 02:04:43,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:43,661 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-09-25 02:04:43,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:04:43,661 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-09-25 02:04:43,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 02:04:43,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:43,663 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:43,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:04:43,663 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:43,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:43,664 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-09-25 02:04:43,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:43,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628596771] [2020-09-25 02:04:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:43,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:44,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:45,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:45,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 02:04:45,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:45,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1933 [2020-09-25 02:04:45,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:45,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 02:04:45,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:45,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 02:04:45,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:45,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:45,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:45,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:45,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:45,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:45,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:45,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:45,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:45,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:45,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:46,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:46,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:04:46,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:46,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-09-25 02:04:46,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 02:04:46,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:46,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 02:04:46,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:46,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:46,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:46,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:46,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:04:46,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:46,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-09-25 02:04:46,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:46,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:46,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:04:46,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:46,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:46,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:46,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:46,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:46,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:46,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-25 02:04:46,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:46,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:46,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:46,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:04:46,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:46,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:46,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:47,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 02:04:47,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:47,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:47,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:47,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:47,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:47,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 02:04:47,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:47,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:47,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:47,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 02:04:47,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:47,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:47,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:47,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 02:04:47,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:47,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:47,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:47,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:47,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:47,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:04:47,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:47,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:47,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:47,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 15 proven. 124 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-25 02:04:47,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628596771] [2020-09-25 02:04:47,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:47,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 02:04:47,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690775536] [2020-09-25 02:04:47,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 02:04:47,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:47,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 02:04:47,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:04:47,565 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 13 states. [2020-09-25 02:04:47,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:47,807 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-09-25 02:04:47,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:04:47,808 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-09-25 02:04:47,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:47,812 INFO L225 Difference]: With dead ends: 66 [2020-09-25 02:04:47,813 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 02:04:47,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-25 02:04:47,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 02:04:47,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 02:04:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 02:04:47,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 02:04:47,830 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-09-25 02:04:47,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:47,833 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 02:04:47,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 02:04:47,835 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 02:04:47,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 02:04:47,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:47,837 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:47,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:04:47,843 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:47,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:47,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-09-25 02:04:47,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:47,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148151159] [2020-09-25 02:04:47,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:48,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:51,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:51,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 02:04:51,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:51,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3419 [2020-09-25 02:04:51,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:51,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 02:04:51,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:51,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 02:04:51,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:51,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:51,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:51,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:51,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:51,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:51,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:04:51,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:51,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:51,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:51,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:51,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 02:04:51,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:51,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-09-25 02:04:51,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:51,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 02:04:51,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:51,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 02:04:51,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:51,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:51,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:52,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:52,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:04:52,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:52,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-09-25 02:04:52,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:52,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:04:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:04:52,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:52,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:52,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:52,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:52,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:04:52,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:52,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-09-25 02:04:52,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:52,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:52,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:52,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:04:52,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:52,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:52,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:53,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:53,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:53,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:53,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-25 02:04:53,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:53,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:53,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:53,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:04:53,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:53,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:53,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:53,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:53,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:53,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:53,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 02:04:53,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:53,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:53,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:53,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:53,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:53,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:53,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 02:04:53,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:53,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:53,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:53,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:53,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:53,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:53,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:53,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:53,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:53,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:53,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 02:04:53,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:53,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:53,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:53,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:53,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:53,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:53,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:53,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:53,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:53,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 02:04:53,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:53,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:53,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:53,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:53,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:53,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:53,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:53,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:53,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:53,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:53,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:04:53,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:53,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:53,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:53,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:53,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 18 proven. 178 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-09-25 02:04:53,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148151159] [2020-09-25 02:04:53,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:53,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 02:04:53,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393854478] [2020-09-25 02:04:53,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 02:04:53,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:53,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 02:04:53,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:04:53,838 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 14 states. [2020-09-25 02:04:53,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:53,996 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 02:04:53,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:04:53,997 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 90 [2020-09-25 02:04:53,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:53,998 INFO L225 Difference]: With dead ends: 71 [2020-09-25 02:04:53,999 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 02:04:54,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-09-25 02:04:54,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 02:04:54,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 02:04:54,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 02:04:54,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-09-25 02:04:54,006 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-09-25 02:04:54,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:54,007 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-09-25 02:04:54,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 02:04:54,007 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-09-25 02:04:54,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 02:04:54,008 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:54,008 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:54,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:04:54,009 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:54,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:54,009 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-09-25 02:04:54,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:54,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526464049] [2020-09-25 02:04:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:56,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:56,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 02:04:56,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:56,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2159 [2020-09-25 02:04:56,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:56,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 02:04:56,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:56,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 02:04:56,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:56,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:56,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:56,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:56,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:56,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:56,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:56,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:56,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:56,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:56,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:56,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:56,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:56,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:56,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 02:04:56,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:56,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-09-25 02:04:56,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:56,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 02:04:56,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:56,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 02:04:56,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:56,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:56,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:57,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:57,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 02:04:57,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:57,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-09-25 02:04:57,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:57,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:04:57,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:57,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 02:04:57,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:57,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:57,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:57,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:57,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:04:57,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:57,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-09-25 02:04:57,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:57,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:04:57,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:57,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:04:57,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:57,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:57,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:58,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:58,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:04:58,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:58,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-09-25 02:04:58,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:58,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:58,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:58,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:04:58,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:58,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:58,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:58,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:58,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:58,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:58,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 02:04:58,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:58,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:58,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:58,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:04:58,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:58,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:58,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:58,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:58,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:58,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:58,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 02:04:58,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:58,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:58,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:58,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:58,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:58,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:58,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:58,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 02:04:58,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:58,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:58,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:58,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:58,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:58,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:58,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:58,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:58,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:58,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:58,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 02:04:58,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:58,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:59,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:59,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:59,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:59,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:59,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:59,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 02:04:59,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:59,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:59,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:59,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:59,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:59,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:59,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:59,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:59,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:04:59,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:59,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 18 proven. 226 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-09-25 02:04:59,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526464049] [2020-09-25 02:04:59,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:59,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 02:04:59,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684031694] [2020-09-25 02:04:59,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 02:04:59,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:59,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 02:04:59,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:04:59,148 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 15 states. [2020-09-25 02:04:59,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:59,324 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-09-25 02:04:59,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 02:04:59,325 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 99 [2020-09-25 02:04:59,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:59,327 INFO L225 Difference]: With dead ends: 76 [2020-09-25 02:04:59,327 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 02:04:59,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-25 02:04:59,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 02:04:59,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 02:04:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 02:04:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 02:04:59,334 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 99 [2020-09-25 02:04:59,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:59,335 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 02:04:59,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 02:04:59,335 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 02:04:59,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 02:04:59,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:59,336 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:59,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 02:04:59,336 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:59,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:59,337 INFO L82 PathProgramCache]: Analyzing trace with hash -276966773, now seen corresponding path program 10 times [2020-09-25 02:04:59,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:59,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520293046] [2020-09-25 02:04:59,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:59,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:59,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:02,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:02,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 02:05:02,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:05:02,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3226 [2020-09-25 02:05:02,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 02:05:02,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:05:02,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 02:05:02,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:02,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:05:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:02,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:02,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:05:02,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:02,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:05:02,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:02,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:02,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:02,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:02,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:02,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:05:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:02,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:03,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:03,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 02:05:03,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:03,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-09-25 02:05:03,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:03,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 02:05:03,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:05:03,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 02:05:03,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:03,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:03,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:04,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:04,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 02:05:04,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:04,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-09-25 02:05:04,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 02:05:04,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:04,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 02:05:04,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:04,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:04,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:04,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 02:05:04,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:04,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-09-25 02:05:04,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:04,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:05:04,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:04,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 02:05:04,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:04,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:05:05,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-09-25 02:05:05,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:05:05,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:05:05,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:05,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:05:05,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-09-25 02:05:05,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:05:05,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:05:05,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:05:05,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-25 02:05:05,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:05:05,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:05:05,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:06,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:06,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:05:06,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:06,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 02:05:06,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:05:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:05:06,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:06,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:06,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:06,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:06,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:05:06,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:06,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 02:05:06,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:05:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:05:06,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:06,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:06,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:06,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:06,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:05:06,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:06,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 02:05:06,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:05:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:05:06,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:06,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:06,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:06,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:06,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:05:06,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:06,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 02:05:06,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:06,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:05:06,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:06,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:05:06,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:06,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:06,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:06,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:06,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:05:06,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:06,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:05:06,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:06,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:05:06,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:06,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:05:06,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 24 proven. 301 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-09-25 02:05:06,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520293046] [2020-09-25 02:05:06,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:05:06,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 02:05:06,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910805230] [2020-09-25 02:05:06,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:05:06,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:05:06,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:05:06,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:05:06,565 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 16 states. [2020-09-25 02:05:06,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:05:06,804 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-09-25 02:05:06,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 02:05:06,805 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-09-25 02:05:06,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:05:06,806 INFO L225 Difference]: With dead ends: 81 [2020-09-25 02:05:06,806 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 02:05:06,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-09-25 02:05:06,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 02:05:06,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-09-25 02:05:06,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 02:05:06,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-09-25 02:05:06,818 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 108 [2020-09-25 02:05:06,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:05:06,818 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-09-25 02:05:06,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:05:06,819 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-09-25 02:05:06,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 02:05:06,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:05:06,820 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:05:06,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 02:05:06,820 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:05:06,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:05:06,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1749540651, now seen corresponding path program 11 times [2020-09-25 02:05:06,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:05:06,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959456587] [2020-09-25 02:05:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:05:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:06,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:07,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:11,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:11,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 02:05:11,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:05:11,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4291 [2020-09-25 02:05:11,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 02:05:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:05:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 02:05:11,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:11,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:05:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:11,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:11,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:11,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:05:11,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:11,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:05:11,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:11,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:11,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:11,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:05:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:11,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:11,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:11,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 02:05:11,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:11,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-09-25 02:05:11,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:11,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 02:05:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:05:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 02:05:11,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:12,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:12,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:12,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:12,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 02:05:12,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:12,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-09-25 02:05:12,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 02:05:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 02:05:12,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:12,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:12,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:13,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:13,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 02:05:13,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:13,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 602 [2020-09-25 02:05:13,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:13,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 02:05:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 02:05:13,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 02:05:13,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:13,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:13,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:13,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 02:05:13,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:13,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-09-25 02:05:13,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:05:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:13,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 02:05:13,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:13,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:13,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:14,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:14,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:05:14,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:14,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-09-25 02:05:14,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:05:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:05:14,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:14,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:14,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:14,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:14,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:05:14,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:14,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-25 02:05:14,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:14,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:05:14,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:14,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:05:14,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:14,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:14,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:14,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:14,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:05:14,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:14,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 02:05:14,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:05:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:14,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:05:14,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:14,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:14,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:15,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:15,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:05:15,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:15,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 02:05:15,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:05:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:05:15,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:15,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:15,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:15,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:15,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:05:15,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:15,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 02:05:15,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:15,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:05:15,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:15,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:05:15,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:15,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:15,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:15,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:15,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:05:15,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:15,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 02:05:15,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:15,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:05:15,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:15,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:05:15,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:15,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:15,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:15,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:15,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:05:15,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:15,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 02:05:15,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:15,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:05:15,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:15,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:05:15,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:15,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:15,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:15,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:15,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:05:15,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:15,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:05:15,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:15,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:05:15,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:15,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:05:15,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 21 proven. 378 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-09-25 02:05:15,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959456587] [2020-09-25 02:05:15,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:05:15,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 02:05:15,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759080353] [2020-09-25 02:05:15,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 02:05:15,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:05:15,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 02:05:15,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:05:15,442 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 17 states. [2020-09-25 02:05:15,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:05:15,726 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2020-09-25 02:05:15,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 02:05:15,727 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 117 [2020-09-25 02:05:15,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:05:15,728 INFO L225 Difference]: With dead ends: 86 [2020-09-25 02:05:15,728 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 02:05:15,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2020-09-25 02:05:15,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 02:05:15,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-25 02:05:15,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 02:05:15,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2020-09-25 02:05:15,735 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 117 [2020-09-25 02:05:15,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:05:15,736 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2020-09-25 02:05:15,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 02:05:15,736 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2020-09-25 02:05:15,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 02:05:15,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:05:15,737 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:05:15,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 02:05:15,738 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:05:15,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:05:15,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1141580405, now seen corresponding path program 12 times [2020-09-25 02:05:15,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:05:15,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132259551] [2020-09-25 02:05:15,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:05:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:15,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:16,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:19,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:19,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 02:05:19,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:05:19,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3578 [2020-09-25 02:05:19,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:19,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 02:05:19,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:05:19,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 02:05:19,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:19,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:05:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:19,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:19,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:19,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:05:19,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:19,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:05:19,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:19,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:19,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:19,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:19,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:19,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:05:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:19,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:20,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:20,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 02:05:20,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:20,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-09-25 02:05:20,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:20,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 02:05:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:05:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 02:05:20,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:20,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:20,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:21,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:21,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 02:05:21,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:21,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-09-25 02:05:21,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 02:05:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 02:05:21,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:21,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:21,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:21,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:21,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 02:05:21,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:21,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-09-25 02:05:21,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:21,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 02:05:21,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:21,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 02:05:21,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:21,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:21,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking...