/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 SequenceOfStatements --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 --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_20x0-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:06:56,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:06:56,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:06:56,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:06:56,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:06:56,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:06:56,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:06:56,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:06:56,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:06:56,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:06:56,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:06:56,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:06:56,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:06:56,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:06:56,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:06:56,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:06:56,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:06:56,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:06:56,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:06:56,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:06:56,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:06:56,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:06:56,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:06:56,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:06:56,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:06:56,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:06:56,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:06:56,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:06:56,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:06:56,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:06:56,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:06:56,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:06:56,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:06:56,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:06:56,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:06:56,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:06:56,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:06:56,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:06:56,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:06:56,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:06:56,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:06:56,518 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 [2020-10-13 13:06:56,544 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:06:56,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:06:56,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:06:56,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:06:56,546 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:06:56,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:06:56,547 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:06:56,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:06:56,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:06:56,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:06:56,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:06:56,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:06:56,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:06:56,548 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:06:56,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:06:56,548 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:06:56,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:06:56,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:06:56,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:06:56,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:06:56,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:06:56,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:06:56,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:06:56,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:06:56,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:06:56,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:06:56,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:06:56,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:06:56,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:06:56,551 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 -> SequenceOfStatements 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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=true; [2020-10-13 13:06:56,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:06:56,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:06:56,856 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:06:56,858 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:06:56,858 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:06:56,859 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_20x0-2.c [2020-10-13 13:06:56,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edf1d0d21/7e4caa90276048449694f067aac5eaa7/FLAGfacc1a000 [2020-10-13 13:06:57,353 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:06:57,354 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_20x0-2.c [2020-10-13 13:06:57,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edf1d0d21/7e4caa90276048449694f067aac5eaa7/FLAGfacc1a000 [2020-10-13 13:06:57,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edf1d0d21/7e4caa90276048449694f067aac5eaa7 [2020-10-13 13:06:57,732 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:06:57,734 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:06:57,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:06:57,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:06:57,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:06:57,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:06:57" (1/1) ... [2020-10-13 13:06:57,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34fa96a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:57, skipping insertion in model container [2020-10-13 13:06:57,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:06:57" (1/1) ... [2020-10-13 13:06:57,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:06:57,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:06:57,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:06:57,939 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:06:57,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:06:57,971 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:06:57,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:57 WrapperNode [2020-10-13 13:06:57,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:06:57,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:06:57,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:06:57,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:06:57,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:57" (1/1) ... [2020-10-13 13:06:57,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:57" (1/1) ... [2020-10-13 13:06:57,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:57" (1/1) ... [2020-10-13 13:06:57,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:57" (1/1) ... [2020-10-13 13:06:57,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:57" (1/1) ... [2020-10-13 13:06:57,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:57" (1/1) ... [2020-10-13 13:06:58,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:57" (1/1) ... [2020-10-13 13:06:58,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:06:58,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:06:58,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:06:58,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:06:58,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:57" (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 [2020-10-13 13:06:58,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:06:58,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:06:58,170 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-13 13:06:58,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:06:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:06:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-13 13:06:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:06:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:06:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:06:58,334 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:06:58,334 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 13:06:58,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:06:58 BoogieIcfgContainer [2020-10-13 13:06:58,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:06:58,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:06:58,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:06:58,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:06:58,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:06:57" (1/3) ... [2020-10-13 13:06:58,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69062ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:06:58, skipping insertion in model container [2020-10-13 13:06:58,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:57" (2/3) ... [2020-10-13 13:06:58,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69062ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:06:58, skipping insertion in model container [2020-10-13 13:06:58,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:06:58" (3/3) ... [2020-10-13 13:06:58,348 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_20x0-2.c [2020-10-13 13:06:58,358 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:06:58,364 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:06:58,378 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:06:58,405 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:06:58,405 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:06:58,405 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:06:58,405 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:06:58,406 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:06:58,406 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:06:58,406 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:06:58,406 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:06:58,426 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-13 13:06:58,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-13 13:06:58,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:06:58,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:06:58,435 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:06:58,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:06:58,441 INFO L82 PathProgramCache]: Analyzing trace with hash 2001781660, now seen corresponding path program 1 times [2020-10-13 13:06:58,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:06:58,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516754780] [2020-10-13 13:06:58,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:06:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:58,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:58,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:58,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:58,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 13:06:58,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:06:58,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-13 13:06:58,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:58,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:06:58,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:06:58,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:06:58,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 13:06:58,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:06:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:58,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:58,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:58,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:06:58,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:58,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:06:58,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:58,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:06:58,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:06:58,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 13:06:58,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:06:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:58,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:58,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:06:58,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:58,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:06:58,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:58,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:06:58,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:06:58,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:06:58,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:06:59,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516754780] [2020-10-13 13:06:59,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:06:59,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:06:59,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052331061] [2020-10-13 13:06:59,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:06:59,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:06:59,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:06:59,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:06:59,060 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-10-13 13:06:59,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:06:59,158 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-10-13 13:06:59,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:06:59,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-13 13:06:59,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:06:59,174 INFO L225 Difference]: With dead ends: 30 [2020-10-13 13:06:59,175 INFO L226 Difference]: Without dead ends: 18 [2020-10-13 13:06:59,183 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 [2020-10-13 13:06:59,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-13 13:06:59,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-13 13:06:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-13 13:06:59,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-10-13 13:06:59,229 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-10-13 13:06:59,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:06:59,229 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-10-13 13:06:59,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:06:59,230 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-10-13 13:06:59,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 13:06:59,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:06:59,232 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:06:59,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:06:59,233 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:06:59,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:06:59,233 INFO L82 PathProgramCache]: Analyzing trace with hash -118151420, now seen corresponding path program 1 times [2020-10-13 13:06:59,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:06:59,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92554831] [2020-10-13 13:06:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:06:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:59,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:59,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:59,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:59,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 13:06:59,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:06:59,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-13 13:06:59,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:59,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:06:59,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:06:59,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:06:59,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:59,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:06:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:59,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:59,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:59,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:06:59,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:59,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:06:59,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:06:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:06:59,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:59,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:06:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:59,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:59,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:59,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:06:59,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:59,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 13:06:59,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:59,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:06:59,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:06:59,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:06:59,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:59,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:06:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:59,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:59,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:59,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:06:59,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:59,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:06:59,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:06:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:06:59,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:06:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 13:06:59,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92554831] [2020-10-13 13:06:59,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:06:59,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:06:59,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872943419] [2020-10-13 13:06:59,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:06:59,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:06:59,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:06:59,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:06:59,650 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2020-10-13 13:06:59,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:06:59,730 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-10-13 13:06:59,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:06:59,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-13 13:06:59,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:06:59,732 INFO L225 Difference]: With dead ends: 25 [2020-10-13 13:06:59,733 INFO L226 Difference]: Without dead ends: 21 [2020-10-13 13:06:59,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:06:59,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-13 13:06:59,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-13 13:06:59,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-13 13:06:59,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-13 13:06:59,741 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-10-13 13:06:59,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:06:59,742 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-13 13:06:59,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:06:59,742 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-13 13:06:59,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 13:06:59,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:06:59,743 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:06:59,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:06:59,744 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:06:59,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:06:59,744 INFO L82 PathProgramCache]: Analyzing trace with hash 764931548, now seen corresponding path program 2 times [2020-10-13 13:06:59,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:06:59,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410615073] [2020-10-13 13:06:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:06:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:59,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:59,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:59,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:59,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 13:06:59,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:06:59,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-13 13:06:59,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:06:59,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:06:59,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:06:59,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:59,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:06:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:59,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:59,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:59,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:06:59,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:06:59,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:06:59,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:06:59,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:06:59,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:06:59,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:06:59,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:06:59,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:06:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:06:59,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:06:59,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:06:59,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:06:59,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:00,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 13:07:00,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:07:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:07:00,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:00,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:00,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:00,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:00,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:07:00,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:00,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 13:07:00,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:00,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:07:00,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:00,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:07:00,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:00,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:00,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:00,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:00,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:07:00,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:00,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:07:00,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:00,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:07:00,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:00,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:07:00,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:00,119 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 13:07:00,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410615073] [2020-10-13 13:07:00,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:00,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:07:00,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408899057] [2020-10-13 13:07:00,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:07:00,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:00,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:07:00,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:07:00,123 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 8 states. [2020-10-13 13:07:00,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:00,208 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-10-13 13:07:00,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:07:00,209 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-13 13:07:00,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:00,211 INFO L225 Difference]: With dead ends: 28 [2020-10-13 13:07:00,211 INFO L226 Difference]: Without dead ends: 24 [2020-10-13 13:07:00,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:07:00,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-13 13:07:00,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-13 13:07:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-13 13:07:00,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-13 13:07:00,219 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2020-10-13 13:07:00,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:00,219 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-13 13:07:00,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:07:00,220 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-13 13:07:00,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 13:07:00,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:00,222 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:00,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:07:00,222 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:00,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:00,223 INFO L82 PathProgramCache]: Analyzing trace with hash 601942852, now seen corresponding path program 3 times [2020-10-13 13:07:00,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:00,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243599636] [2020-10-13 13:07:00,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:00,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:00,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:00,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 13:07:00,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:00,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-13 13:07:00,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:00,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:07:00,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:07:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:07:00,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:00,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:00,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:00,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:00,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:07:00,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:00,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:07:00,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:00,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:00,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:07:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:00,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:00,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:00,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:07:00,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:00,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 13:07:00,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:00,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:07:00,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:00,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:07:00,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:00,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:00,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:00,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:00,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:07:00,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:00,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 13:07:00,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:00,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:07:00,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:07:00,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:00,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:00,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:00,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:00,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:07:00,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:00,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 13:07:00,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:07:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:07:00,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:00,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:00,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:00,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:00,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:07:00,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:00,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:07:00,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:00,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:07:00,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:00,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:07:00,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 13:07:00,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243599636] [2020-10-13 13:07:00,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:00,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:07:00,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162835896] [2020-10-13 13:07:00,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:07:00,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:00,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:07:00,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:07:00,935 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2020-10-13 13:07:01,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:01,013 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-10-13 13:07:01,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:07:01,014 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-13 13:07:01,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:01,015 INFO L225 Difference]: With dead ends: 31 [2020-10-13 13:07:01,015 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 13:07:01,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:07:01,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 13:07:01,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-13 13:07:01,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 13:07:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-13 13:07:01,023 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2020-10-13 13:07:01,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:01,023 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-13 13:07:01,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:07:01,024 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-13 13:07:01,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 13:07:01,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:01,025 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:01,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:07:01,026 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:01,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:01,026 INFO L82 PathProgramCache]: Analyzing trace with hash -183109604, now seen corresponding path program 4 times [2020-10-13 13:07:01,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:01,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177475775] [2020-10-13 13:07:01,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:01,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:01,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:01,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:01,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:07:01,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:01,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-13 13:07:01,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:01,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:07:01,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:07:01,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:07:01,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:01,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:01,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:01,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:01,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:07:01,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:01,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:07:01,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:01,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:01,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:01,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:01,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:01,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:07:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:01,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:01,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:01,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:07:01,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:01,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 13:07:01,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:01,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:07:01,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:01,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:07:01,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:01,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:01,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:01,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:01,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:07:01,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:01,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 13:07:01,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:07:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:07:01,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:01,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:01,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:01,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:01,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:07:01,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:01,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 13:07:01,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:07:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:01,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:07:01,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:01,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:01,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:01,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:01,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:07:01,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:01,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 13:07:01,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:01,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:07:01,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:01,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:07:01,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:01,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:01,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:01,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:01,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:07:01,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:01,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:07:01,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:07:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:07:01,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-13 13:07:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 13:07:01,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177475775] [2020-10-13 13:07:01,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:01,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:07:01,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166370506] [2020-10-13 13:07:01,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:07:01,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:01,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:07:01,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:07:01,975 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 11 states. [2020-10-13 13:07:02,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:02,082 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-10-13 13:07:02,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:07:02,083 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-13 13:07:02,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:02,084 INFO L225 Difference]: With dead ends: 34 [2020-10-13 13:07:02,084 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 13:07:02,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:07:02,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 13:07:02,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-13 13:07:02,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-13 13:07:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-10-13 13:07:02,092 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2020-10-13 13:07:02,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:02,093 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-10-13 13:07:02,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:07:02,093 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-10-13 13:07:02,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 13:07:02,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:02,094 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:02,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:07:02,095 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:02,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:02,095 INFO L82 PathProgramCache]: Analyzing trace with hash -155447420, now seen corresponding path program 5 times [2020-10-13 13:07:02,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:02,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892949741] [2020-10-13 13:07:02,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:02,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:02,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:02,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:02,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 13:07:02,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:02,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-10-13 13:07:02,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:02,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:07:02,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:07:02,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:07:02,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:02,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:02,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:02,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:02,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:07:02,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:02,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:07:02,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:02,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:02,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:07:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:02,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:02,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:02,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:07:02,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:02,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-13 13:07:02,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:02,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:07:02,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:02,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 13:07:02,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:02,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:02,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:02,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:02,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:07:02,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:02,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 13:07:02,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:07:02,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:02,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:07:02,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:03,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:03,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:03,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:03,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:07:03,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:03,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 13:07:03,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:03,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:07:03,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:07:03,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:03,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:03,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:03,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:03,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:07:03,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:03,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 13:07:03,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:07:03,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:03,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:07:03,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:03,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:03,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:03,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:03,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:07:03,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:03,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:07:03,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:03,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:07:03,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:03,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:07:03,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:03,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:03,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:03,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:03,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:07:03,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:03,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:07:03,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:03,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:07:03,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:03,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:07:03,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:03,267 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 46 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-13 13:07:03,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892949741] [2020-10-13 13:07:03,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:03,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:07:03,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424945252] [2020-10-13 13:07:03,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:07:03,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:03,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:07:03,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:07:03,271 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-10-13 13:07:03,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:03,405 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-10-13 13:07:03,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:07:03,405 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-10-13 13:07:03,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:03,407 INFO L225 Difference]: With dead ends: 37 [2020-10-13 13:07:03,407 INFO L226 Difference]: Without dead ends: 33 [2020-10-13 13:07:03,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:07:03,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-13 13:07:03,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-13 13:07:03,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 13:07:03,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-10-13 13:07:03,414 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2020-10-13 13:07:03,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:03,415 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-10-13 13:07:03,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:07:03,415 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-10-13 13:07:03,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 13:07:03,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:03,417 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:03,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:07:03,418 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:03,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:03,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1716183644, now seen corresponding path program 6 times [2020-10-13 13:07:03,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:03,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462919445] [2020-10-13 13:07:03,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:03,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:03,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:03,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:03,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 13:07:03,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:03,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-13 13:07:03,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:07:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:07:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 13:07:03,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:03,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:03,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:03,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:03,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:07:03,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:03,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:07:03,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:03,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:03,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:03,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:03,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:03,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:07:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:03,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:04,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:04,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:07:04,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:04,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-13 13:07:04,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:07:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 13:07:04,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:04,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:04,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:04,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:04,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:07:04,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:04,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-13 13:07:04,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:07:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:04,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:07:04,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:04,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:04,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:04,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:04,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:07:04,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:04,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 13:07:04,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:04,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:07:04,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:04,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:07:04,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:04,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:04,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:04,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:04,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:07:04,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:04,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 13:07:04,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:04,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:07:04,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:04,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:07:04,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:04,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:04,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:04,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:04,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:07:04,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:04,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 13:07:04,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:04,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:07:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:07:04,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:04,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:04,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:04,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:04,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:07:04,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:04,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:07:04,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:07:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:04,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:07:04,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:04,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:04,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:04,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:04,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:07:04,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:04,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:07:04,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:07:04,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:04,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:07:04,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:07:04,800 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 6 proven. 69 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 13:07:04,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462919445] [2020-10-13 13:07:04,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:04,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 13:07:04,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378831698] [2020-10-13 13:07:04,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:07:04,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:04,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:07:04,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:07:04,804 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 12 states. [2020-10-13 13:07:04,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:04,985 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-10-13 13:07:04,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:07:04,986 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-13 13:07:04,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:04,987 INFO L225 Difference]: With dead ends: 40 [2020-10-13 13:07:04,987 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 13:07:04,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:07:04,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 13:07:04,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-13 13:07:04,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-13 13:07:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-10-13 13:07:04,995 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2020-10-13 13:07:04,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:04,995 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-10-13 13:07:04,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:07:04,996 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-10-13 13:07:04,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 13:07:04,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:04,997 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:04,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:07:04,997 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:04,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:04,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1079602236, now seen corresponding path program 7 times [2020-10-13 13:07:04,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:04,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083508483] [2020-10-13 13:07:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:05,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:05,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:05,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 13:07:05,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:05,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 910 [2020-10-13 13:07:05,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:05,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 13:07:05,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:07:05,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 13:07:05,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:05,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:05,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:05,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:05,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:07:05,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:05,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:07:05,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:05,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:05,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:05,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:07:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:05,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:06,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:06,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:07:06,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:06,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-13 13:07:06,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 13:07:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 13:07:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:06,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:06,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:06,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:06,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:07:06,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:06,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-13 13:07:06,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:07:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:06,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:07:06,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:06,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:06,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:06,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:06,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:07:06,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:06,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-13 13:07:06,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:06,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:07:06,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:06,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:07:06,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:06,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:06,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:06,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:06,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:07:06,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:06,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 13:07:06,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:06,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:07:06,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:06,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:07:06,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:06,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:06,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:06,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:06,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:07:06,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:06,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 13:07:06,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:06,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:07:06,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:06,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:07:06,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:06,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:07,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:07,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:07,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:07:07,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:07,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:07:07,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:07,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:07:07,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:07,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:07:07,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:07,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:07,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:07,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:07:07,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:07,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:07:07,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:07,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:07:07,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:07,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:07:07,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:07,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:07,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:07,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:07,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:07:07,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:07,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:07:07,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:07:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:07:07,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 18 proven. 86 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-13 13:07:07,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083508483] [2020-10-13 13:07:07,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:07,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:07:07,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465191500] [2020-10-13 13:07:07,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:07:07,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:07,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:07:07,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:07:07,204 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 13 states. [2020-10-13 13:07:07,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:07,354 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-10-13 13:07:07,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:07:07,355 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-10-13 13:07:07,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:07,356 INFO L225 Difference]: With dead ends: 43 [2020-10-13 13:07:07,356 INFO L226 Difference]: Without dead ends: 39 [2020-10-13 13:07:07,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-10-13 13:07:07,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-13 13:07:07,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-13 13:07:07,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 13:07:07,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-10-13 13:07:07,364 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2020-10-13 13:07:07,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:07,364 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-10-13 13:07:07,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:07:07,365 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-10-13 13:07:07,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 13:07:07,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:07,366 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:07,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:07:07,366 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:07,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:07,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1035381916, now seen corresponding path program 8 times [2020-10-13 13:07:07,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:07,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828376515] [2020-10-13 13:07:07,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:07,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:07,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:08,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:08,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 13:07:08,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:08,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-10-13 13:07:08,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 13:07:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:07:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 13:07:08,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:08,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:08,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:08,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:08,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:07:08,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:08,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:07:08,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:08,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:08,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:07:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:08,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:08,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:08,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 13:07:08,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:08,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-13 13:07:08,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 13:07:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 13:07:08,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:08,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:08,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:08,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:08,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:07:08,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:08,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-13 13:07:08,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:08,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 13:07:08,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:08,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:07:08,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:08,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:08,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:08,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:08,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:07:08,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:08,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-13 13:07:08,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:07:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:07:08,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:08,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:08,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:09,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:09,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:07:09,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:09,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-13 13:07:09,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:07:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:07:09,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:09,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:09,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:09,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:09,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:07:09,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:09,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 13:07:09,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:09,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:07:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:07:09,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:09,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:09,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:09,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:09,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:07:09,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:09,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 13:07:09,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:07:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:07:09,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:09,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:09,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:09,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:09,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:07:09,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:09,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 13:07:09,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:09,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:07:09,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:09,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:07:09,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:09,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:09,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:09,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:09,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:07:09,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:09,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:07:09,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:09,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:07:09,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:09,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:07:09,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:09,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:09,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:09,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:09,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:07:09,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:09,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:07:09,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:07:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:07:09,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 19 proven. 116 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-13 13:07:09,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828376515] [2020-10-13 13:07:09,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:09,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 13:07:09,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116728366] [2020-10-13 13:07:09,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:07:09,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:09,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:07:09,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:07:09,465 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 14 states. [2020-10-13 13:07:09,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:09,632 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-10-13 13:07:09,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:07:09,632 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-10-13 13:07:09,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:09,634 INFO L225 Difference]: With dead ends: 46 [2020-10-13 13:07:09,634 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 13:07:09,635 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 [2020-10-13 13:07:09,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 13:07:09,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-13 13:07:09,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-13 13:07:09,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-10-13 13:07:09,641 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2020-10-13 13:07:09,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:09,641 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-10-13 13:07:09,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:07:09,642 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-10-13 13:07:09,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 13:07:09,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:09,643 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:09,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:07:09,643 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:09,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:09,644 INFO L82 PathProgramCache]: Analyzing trace with hash 952137732, now seen corresponding path program 9 times [2020-10-13 13:07:09,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:09,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896528288] [2020-10-13 13:07:09,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:09,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:09,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:10,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:10,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 13:07:10,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:10,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-10-13 13:07:10,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 13:07:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:07:10,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 13:07:10,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:10,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:10,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:10,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:10,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:07:10,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:10,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:07:10,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:10,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:10,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:07:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:10,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:11,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:11,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 13:07:11,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:11,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-13 13:07:11,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 13:07:11,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:11,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 13:07:11,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:11,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:11,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:11,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:11,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 13:07:11,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:11,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-13 13:07:11,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:11,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 13:07:11,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:11,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 13:07:11,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:11,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:11,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:11,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:11,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:07:11,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:11,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-13 13:07:11,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:11,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 13:07:11,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:11,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:07:11,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:11,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:11,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:11,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:11,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:07:11,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:11,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-13 13:07:11,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:11,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:07:11,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:11,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:07:11,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:11,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:11,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:12,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:12,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:07:12,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:12,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 13:07:12,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:12,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:07:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:07:12,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:12,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:12,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:12,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:12,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:07:12,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:12,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 13:07:12,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:07:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:12,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:07:12,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:12,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:12,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:12,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:12,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:07:12,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:12,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 13:07:12,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:07:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:12,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:07:12,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:12,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:12,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:12,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:12,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:07:12,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:12,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 13:07:12,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:07:12,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:12,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:07:12,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:12,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:12,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:12,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:12,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:07:12,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:12,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:07:12,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:12,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:07:12,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:12,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:07:12,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:12,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:12,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:12,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:12,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:07:12,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:12,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:07:12,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:07:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:07:12,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:12,510 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 16 proven. 142 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-13 13:07:12,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896528288] [2020-10-13 13:07:12,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:12,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 13:07:12,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700209452] [2020-10-13 13:07:12,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 13:07:12,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:12,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 13:07:12,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:07:12,514 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 16 states. [2020-10-13 13:07:12,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:12,712 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-10-13 13:07:12,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:07:12,712 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2020-10-13 13:07:12,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:12,714 INFO L225 Difference]: With dead ends: 49 [2020-10-13 13:07:12,714 INFO L226 Difference]: Without dead ends: 45 [2020-10-13 13:07:12,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2020-10-13 13:07:12,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-13 13:07:12,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-13 13:07:12,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 13:07:12,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-10-13 13:07:12,721 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2020-10-13 13:07:12,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:12,721 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-10-13 13:07:12,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 13:07:12,722 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-10-13 13:07:12,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 13:07:12,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:12,723 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:12,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:07:12,723 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:12,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:12,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1540970204, now seen corresponding path program 10 times [2020-10-13 13:07:12,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:12,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511120519] [2020-10-13 13:07:12,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:12,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:13,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:13,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:13,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 13:07:13,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:13,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-10-13 13:07:13,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:13,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 13:07:13,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:07:13,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 13:07:13,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:13,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:13,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:13,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:13,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:07:13,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:13,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:07:13,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:13,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:13,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:13,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:07:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:13,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:13,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:13,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 13:07:13,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:13,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-13 13:07:13,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:13,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 13:07:13,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:13,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 13:07:13,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:13,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:13,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:14,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:14,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 13:07:14,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:14,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-13 13:07:14,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:14,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 13:07:14,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:14,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 13:07:14,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:14,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:14,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:14,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:14,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 13:07:14,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:14,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-13 13:07:14,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 13:07:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 13:07:14,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:14,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:14,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:14,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:14,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:07:14,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:14,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-13 13:07:14,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:14,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 13:07:14,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:14,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:07:14,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:14,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:14,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:14,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:14,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:07:14,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:14,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 13:07:14,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:14,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:07:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:07:14,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:14,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:14,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:15,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:15,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:07:15,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:15,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 13:07:15,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:07:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:07:15,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:15,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:15,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:15,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:15,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:07:15,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:15,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 13:07:15,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:07:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:07:15,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:15,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:15,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:15,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:15,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:07:15,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:15,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:07:15,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:15,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:07:15,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:15,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:07:15,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:15,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:15,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:15,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:15,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:07:15,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:15,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:07:15,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:15,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:07:15,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:15,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:07:15,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:15,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:15,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:15,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:15,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:07:15,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:15,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:07:15,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:15,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:07:15,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:15,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:07:15,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:15,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:15,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:15,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:15,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:07:15,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:15,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:07:15,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:15,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:07:15,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:15,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:07:15,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 24 proven. 183 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-13 13:07:15,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511120519] [2020-10-13 13:07:15,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:15,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 13:07:15,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468524939] [2020-10-13 13:07:15,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 13:07:15,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:15,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 13:07:15,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:07:15,457 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 16 states. [2020-10-13 13:07:15,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:15,716 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-10-13 13:07:15,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:07:15,717 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-10-13 13:07:15,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:15,719 INFO L225 Difference]: With dead ends: 52 [2020-10-13 13:07:15,719 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 13:07:15,720 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 [2020-10-13 13:07:15,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 13:07:15,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-13 13:07:15,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-13 13:07:15,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-10-13 13:07:15,726 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 73 [2020-10-13 13:07:15,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:15,726 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-10-13 13:07:15,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 13:07:15,727 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-10-13 13:07:15,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 13:07:15,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:15,728 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:15,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:07:15,729 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:15,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:15,729 INFO L82 PathProgramCache]: Analyzing trace with hash -2010530748, now seen corresponding path program 11 times [2020-10-13 13:07:15,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:15,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259748527] [2020-10-13 13:07:15,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:15,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:16,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:17,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:17,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 13:07:17,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:17,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1396 [2020-10-13 13:07:17,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 13:07:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:07:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 13:07:17,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:17,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:17,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:17,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:17,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:07:17,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:17,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:07:17,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:17,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:17,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:17,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:17,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:17,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:07:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:17,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:17,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:17,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 13:07:17,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:17,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-13 13:07:17,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:17,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 13:07:17,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:17,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 13:07:17,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:17,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:17,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:17,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:17,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 13:07:17,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:17,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-13 13:07:17,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:17,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 13:07:17,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:17,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 13:07:17,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:17,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:17,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:18,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:18,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 13:07:18,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:18,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-13 13:07:18,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 13:07:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 13:07:18,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:18,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:18,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:18,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:18,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 13:07:18,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:18,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-13 13:07:18,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 13:07:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 13:07:18,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:18,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:18,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:18,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:18,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:07:18,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:18,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-13 13:07:18,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 13:07:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:18,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:07:18,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:18,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:18,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:18,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:18,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:07:18,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:18,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 13:07:18,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:07:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:07:18,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:18,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:18,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:18,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:18,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:07:18,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:18,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 13:07:18,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:07:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:07:18,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:18,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:18,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:18,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:18,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:07:18,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:18,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 13:07:18,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:07:18,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:18,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:07:18,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:18,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:18,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:18,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:18,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:07:18,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:18,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 13:07:18,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:18,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:07:18,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:18,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:07:18,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:18,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:18,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:18,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:18,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:07:18,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:18,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:07:18,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:07:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:18,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:07:18,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:18,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:18,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:18,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:18,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:07:18,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:18,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:07:18,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:07:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:18,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:07:18,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:18,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:18,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:18,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:18,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:07:18,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:18,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:07:18,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:18,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:07:18,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:18,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:07:18,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:19,012 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 44 proven. 203 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-13 13:07:19,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259748527] [2020-10-13 13:07:19,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:19,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 13:07:19,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529191828] [2020-10-13 13:07:19,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 13:07:19,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:19,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 13:07:19,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:07:19,016 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2020-10-13 13:07:19,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:19,203 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-10-13 13:07:19,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:07:19,204 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 79 [2020-10-13 13:07:19,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:19,205 INFO L225 Difference]: With dead ends: 55 [2020-10-13 13:07:19,205 INFO L226 Difference]: Without dead ends: 51 [2020-10-13 13:07:19,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2020-10-13 13:07:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-13 13:07:19,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-13 13:07:19,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 13:07:19,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-10-13 13:07:19,216 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 79 [2020-10-13 13:07:19,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:19,217 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-10-13 13:07:19,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 13:07:19,217 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-10-13 13:07:19,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-13 13:07:19,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:19,220 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:19,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:07:19,220 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:19,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:19,220 INFO L82 PathProgramCache]: Analyzing trace with hash -986521316, now seen corresponding path program 12 times [2020-10-13 13:07:19,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:19,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456504080] [2020-10-13 13:07:19,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:19,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:19,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:20,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:20,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 13:07:20,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:20,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1201 [2020-10-13 13:07:20,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:20,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 13:07:20,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:07:20,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 13:07:20,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:20,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:20,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:20,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:20,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:07:20,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:20,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:07:20,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:20,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:20,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:20,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:07:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:20,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:20,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:20,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 13:07:20,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:20,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-13 13:07:20,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 13:07:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 13:07:20,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:20,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:20,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:21,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:21,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 13:07:21,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:21,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-13 13:07:21,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:21,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 13:07:21,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:21,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 13:07:21,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:21,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:21,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:21,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:21,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 13:07:21,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-13 13:07:21,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 13:07:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 13:07:21,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:21,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:21,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:21,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 13:07:21,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:21,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-13 13:07:21,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:21,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 13:07:21,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:21,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 13:07:21,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:22,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:22,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:22,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:22,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 13:07:22,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:22,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-13 13:07:22,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:22,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 13:07:22,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:22,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 13:07:22,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:22,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:22,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:22,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:22,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:07:22,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:22,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-13 13:07:22,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:22,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 13:07:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:07:22,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:22,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:22,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:22,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:22,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:07:22,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:22,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-13 13:07:22,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:22,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:07:22,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:22,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:07:22,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:22,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:22,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:23,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:23,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:07:23,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:23,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-13 13:07:23,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:23,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:07:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:07:23,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:07:23,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:23,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:23,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:23,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:07:23,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:23,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 13:07:23,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:07:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:07:23,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:23,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:23,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:23,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:23,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:07:23,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:23,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 13:07:23,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:07:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:07:23,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:23,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:23,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:23,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:23,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:07:23,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:23,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 13:07:23,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:23,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:07:23,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:07:23,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:23,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:23,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:23,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:23,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:07:23,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:23,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:07:23,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:07:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:07:23,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:23,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:23,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:23,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:07:23,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:23,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:07:23,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:07:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:07:23,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 66 proven. 234 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 13:07:23,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456504080] [2020-10-13 13:07:23,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:23,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 13:07:23,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178034282] [2020-10-13 13:07:23,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 13:07:23,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:23,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 13:07:23,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:07:23,462 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 18 states. [2020-10-13 13:07:23,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:23,697 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-10-13 13:07:23,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 13:07:23,697 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 85 [2020-10-13 13:07:23,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:23,699 INFO L225 Difference]: With dead ends: 58 [2020-10-13 13:07:23,699 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 13:07:23,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2020-10-13 13:07:23,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 13:07:23,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-13 13:07:23,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 13:07:23,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-10-13 13:07:23,716 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 85 [2020-10-13 13:07:23,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:23,717 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-10-13 13:07:23,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 13:07:23,717 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-10-13 13:07:23,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 13:07:23,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:23,719 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:23,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:07:23,720 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:23,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:23,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1073897604, now seen corresponding path program 13 times [2020-10-13 13:07:23,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:23,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966399584] [2020-10-13 13:07:23,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:23,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:24,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:25,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:25,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 13:07:25,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:25,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1469 [2020-10-13 13:07:25,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:25,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 13:07:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:07:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 13:07:25,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:25,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:25,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:25,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:07:25,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:25,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:07:25,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:25,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:25,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:07:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:25,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:25,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:25,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 13:07:25,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:25,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-10-13 13:07:25,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:25,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 13:07:25,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:25,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 13:07:25,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:25,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:25,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:26,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:26,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 13:07:26,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:26,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-13 13:07:26,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:26,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 13:07:26,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:26,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 13:07:26,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:26,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:26,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:26,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:26,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 13:07:26,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:26,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-13 13:07:26,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 13:07:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 13:07:26,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:26,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:26,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:27,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:27,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 13:07:27,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:27,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-13 13:07:27,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:27,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 13:07:27,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:27,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 13:07:27,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:27,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:27,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:27,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:27,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 13:07:27,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:27,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-13 13:07:27,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:27,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 13:07:27,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 13:07:27,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:27,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:27,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:27,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:27,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 13:07:27,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:27,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-13 13:07:27,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:27,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 13:07:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 13:07:27,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:27,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:27,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:27,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:27,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:07:27,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:27,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-13 13:07:27,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:27,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 13:07:27,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:27,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:07:27,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:27,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:27,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:27,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:27,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:07:27,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:27,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 13:07:27,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:27,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:07:27,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:27,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:07:27,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:28,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:28,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:28,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:28,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:07:28,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:28,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 13:07:28,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:28,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:07:28,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:28,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:07:28,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:28,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:28,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:28,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:28,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:07:28,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:28,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 13:07:28,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:07:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:07:28,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:28,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:28,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:28,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:28,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:07:28,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:28,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 13:07:28,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:28,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:07:28,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:28,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:07:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:28,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:28,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:28,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:28,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:07:28,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:28,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:07:28,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:28,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:07:28,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:28,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:07:28,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:28,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:28,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:28,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:28,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:07:28,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:28,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:07:28,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:07:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:07:28,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:28,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:28,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:28,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:28,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:07:28,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:28,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:07:28,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:28,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:07:28,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:07:28,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:28,456 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 36 proven. 317 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-13 13:07:28,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966399584] [2020-10-13 13:07:28,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:28,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 13:07:28,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399486389] [2020-10-13 13:07:28,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 13:07:28,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:28,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 13:07:28,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:07:28,460 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 20 states. [2020-10-13 13:07:28,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:28,696 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-10-13 13:07:28,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:07:28,697 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 91 [2020-10-13 13:07:28,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:28,698 INFO L225 Difference]: With dead ends: 61 [2020-10-13 13:07:28,698 INFO L226 Difference]: Without dead ends: 57 [2020-10-13 13:07:28,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=396, Invalid=726, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:07:28,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-13 13:07:28,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-13 13:07:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 13:07:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-10-13 13:07:28,708 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 91 [2020-10-13 13:07:28,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:28,708 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-10-13 13:07:28,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 13:07:28,709 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-10-13 13:07:28,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 13:07:28,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:28,713 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:28,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:07:28,713 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:28,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:28,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1572648100, now seen corresponding path program 14 times [2020-10-13 13:07:28,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:28,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321317798] [2020-10-13 13:07:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:28,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:29,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:30,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:30,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 13:07:30,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:30,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1515 [2020-10-13 13:07:30,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:30,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 13:07:30,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:07:30,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 13:07:30,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:30,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:30,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:30,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:30,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:07:30,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:30,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:07:30,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:30,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:30,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:30,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:30,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:30,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:07:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:30,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:31,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:07:31,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:31,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-10-13 13:07:31,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:31,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 13:07:31,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:31,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 13:07:31,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:31,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:31,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:31,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 13:07:31,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:31,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-13 13:07:31,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:31,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 13:07:31,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:31,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 13:07:31,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:31,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:31,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:32,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:32,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 13:07:32,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:32,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-10-13 13:07:32,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:32,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 13:07:32,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:32,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 13:07:32,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:32,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:32,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:32,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:32,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 13:07:32,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:32,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-13 13:07:32,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:32,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 13:07:32,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:32,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 13:07:32,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:32,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:32,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:33,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:33,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 13:07:33,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:33,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-13 13:07:33,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:33,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 13:07:33,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:33,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 13:07:33,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:33,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:33,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:33,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:33,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 13:07:33,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:33,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-13 13:07:33,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 13:07:33,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:33,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 13:07:33,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:33,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:33,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:33,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:33,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 13:07:33,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:33,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-13 13:07:33,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:33,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 13:07:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 13:07:33,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:33,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:33,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:34,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:34,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:07:34,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:34,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-13 13:07:34,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:34,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 13:07:34,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:34,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:07:34,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:34,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:34,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:34,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:34,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:07:34,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:34,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 13:07:34,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:07:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:07:34,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:34,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:34,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:34,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:34,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:07:34,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:34,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 13:07:34,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:34,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:07:34,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:34,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:07:34,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:34,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:34,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:34,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:34,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:07:34,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:34,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 13:07:34,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:07:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:34,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:07:34,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:34,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:34,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:34,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:34,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:07:34,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:34,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 13:07:34,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:07:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:07:34,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:07:34,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:34,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:34,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:34,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:07:34,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:34,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 13:07:34,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:34,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:07:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:07:34,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:07:34,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:34,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:34,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:34,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:07:34,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:34,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:07:34,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:07:34,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:34,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:07:34,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:34,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:34,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:34,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:34,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:07:34,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:34,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:07:34,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:34,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:07:34,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:34,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:07:34,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:34,875 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 73 proven. 327 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-10-13 13:07:34,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321317798] [2020-10-13 13:07:34,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:34,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 13:07:34,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333587813] [2020-10-13 13:07:34,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 13:07:34,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:34,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 13:07:34,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:07:34,878 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 20 states. [2020-10-13 13:07:35,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:35,142 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-10-13 13:07:35,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 13:07:35,143 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 97 [2020-10-13 13:07:35,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:35,144 INFO L225 Difference]: With dead ends: 64 [2020-10-13 13:07:35,144 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 13:07:35,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=428, Invalid=762, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 13:07:35,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 13:07:35,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-13 13:07:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-13 13:07:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-10-13 13:07:35,151 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 97 [2020-10-13 13:07:35,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:35,151 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-10-13 13:07:35,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 13:07:35,151 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-10-13 13:07:35,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 13:07:35,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:35,153 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:35,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:07:35,153 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:35,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:35,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1584030916, now seen corresponding path program 15 times [2020-10-13 13:07:35,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:35,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122118465] [2020-10-13 13:07:35,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:35,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:35,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:37,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:37,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 13:07:37,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:37,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2263 [2020-10-13 13:07:37,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:37,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-13 13:07:37,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:07:37,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 13:07:37,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:37,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:37,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:37,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:37,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:07:37,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:37,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:07:37,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:37,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:37,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:37,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:37,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:37,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:07:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:37,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:37,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:37,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 13:07:37,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:37,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-10-13 13:07:37,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-13 13:07:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-13 13:07:37,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:38,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:38,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:38,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:38,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:07:38,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:38,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-13 13:07:38,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-13 13:07:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 13:07:38,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:38,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:38,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:39,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:39,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 13:07:39,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:39,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-13 13:07:39,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:39,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 13:07:39,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:39,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 13:07:39,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:39,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:39,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:39,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:39,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 13:07:39,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:39,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-13 13:07:39,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:39,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 13:07:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 13:07:39,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:39,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:39,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:40,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:40,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 13:07:40,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:40,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-13 13:07:40,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:40,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 13:07:40,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:40,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 13:07:40,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:40,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:40,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:40,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:40,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 13:07:40,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:40,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-13 13:07:40,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:40,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 13:07:40,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:40,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 13:07:40,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:40,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:40,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:40,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:40,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 13:07:40,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:40,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-13 13:07:40,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 13:07:40,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:40,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 13:07:40,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:40,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:40,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:40,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:40,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 13:07:40,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:40,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-13 13:07:40,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:40,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 13:07:40,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:40,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 13:07:40,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:40,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:40,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:40,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:40,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:07:40,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:40,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 13:07:40,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:40,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 13:07:40,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:40,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:07:40,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:41,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:41,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:41,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:41,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:07:41,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:41,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 13:07:41,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:41,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:07:41,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:41,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:07:41,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:41,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:41,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:41,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:41,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:07:41,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:41,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 13:07:41,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:07:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:07:41,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:41,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:41,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:41,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:41,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:07:41,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:41,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 13:07:41,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:07:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:41,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:07:41,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:41,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:41,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:41,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:41,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:07:41,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:41,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 13:07:41,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:07:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:07:41,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:41,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:41,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:41,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:41,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:07:41,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:41,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:07:41,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:41,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:07:41,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:41,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:07:41,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:41,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:41,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:41,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:41,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:07:41,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:41,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:07:41,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:41,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:07:41,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:41,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:07:41,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:41,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:41,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:41,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:41,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:07:41,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:07:41,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:07:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:07:41,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:41,593 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 46 proven. 419 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-13 13:07:41,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122118465] [2020-10-13 13:07:41,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:41,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 13:07:41,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658954636] [2020-10-13 13:07:41,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 13:07:41,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:41,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 13:07:41,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=260, Unknown=0, NotChecked=0, Total=420 [2020-10-13 13:07:41,600 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 21 states. [2020-10-13 13:07:41,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:41,861 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-10-13 13:07:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 13:07:41,861 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 103 [2020-10-13 13:07:41,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:41,862 INFO L225 Difference]: With dead ends: 67 [2020-10-13 13:07:41,862 INFO L226 Difference]: Without dead ends: 63 [2020-10-13 13:07:41,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=480, Invalid=852, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 13:07:41,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-13 13:07:41,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-13 13:07:41,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 13:07:41,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-10-13 13:07:41,874 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 103 [2020-10-13 13:07:41,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:41,875 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-10-13 13:07:41,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 13:07:41,875 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-10-13 13:07:41,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 13:07:41,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:41,878 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:41,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 13:07:41,879 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:41,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:41,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1066046876, now seen corresponding path program 16 times [2020-10-13 13:07:41,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:41,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738661083] [2020-10-13 13:07:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:41,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:42,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:43,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:43,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 13:07:43,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:43,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1758 [2020-10-13 13:07:43,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:43,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-13 13:07:43,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:07:43,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 13:07:43,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:43,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:43,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:43,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:43,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:07:43,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:43,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:07:43,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:43,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:43,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:07:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:43,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:44,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:44,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 13:07:44,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:44,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-13 13:07:44,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-13 13:07:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-13 13:07:44,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:44,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:44,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:44,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:44,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 13:07:44,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:44,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-13 13:07:44,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-13 13:07:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 13:07:44,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:44,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:44,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:45,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:45,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:07:45,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:45,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-13 13:07:45,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:45,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-13 13:07:45,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:45,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 13:07:45,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:45,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:45,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:45,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:45,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 13:07:45,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:45,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-13 13:07:45,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 13:07:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 13:07:45,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:45,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:45,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:45,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:45,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 13:07:45,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:45,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-13 13:07:45,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:45,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 13:07:45,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:45,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 13:07:45,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:45,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:45,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:46,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:46,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 13:07:46,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:46,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-13 13:07:46,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 13:07:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 13:07:46,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:46,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:46,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:46,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:46,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 13:07:46,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:46,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-13 13:07:46,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:46,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 13:07:46,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:46,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 13:07:46,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:46,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:46,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:46,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:46,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 13:07:46,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:46,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-13 13:07:46,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 13:07:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 13:07:46,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:46,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:46,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:46,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:46,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 13:07:46,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:46,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 13:07:46,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:46,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 13:07:46,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:46,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 13:07:46,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:46,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:46,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:46,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:46,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:07:46,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:46,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 13:07:46,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 13:07:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:07:46,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:46,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:46,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:46,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:46,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:07:46,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:46,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 13:07:46,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:46,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:07:46,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:46,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:07:46,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:47,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:47,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:47,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:47,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:07:47,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:47,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 13:07:47,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:47,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:07:47,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:47,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:07:47,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:47,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:47,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:47,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:47,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:07:47,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:47,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 13:07:47,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:47,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:07:47,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:47,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:07:47,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:47,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:47,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:47,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:47,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:07:47,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:47,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:07:47,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:07:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:07:47,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:47,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:47,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:47,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:47,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:07:47,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:47,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:07:47,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:47,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:07:47,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:47,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:07:47,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:47,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:47,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:47,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:47,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:07:47,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:47,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:07:47,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:07:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:07:47,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:47,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:47,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:47,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:07:47,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:47,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:07:47,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:47,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:07:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:07:47,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:47,473 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 66 proven. 432 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 13:07:47,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738661083] [2020-10-13 13:07:47,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:47,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 13:07:47,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780112752] [2020-10-13 13:07:47,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 13:07:47,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:47,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 13:07:47,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=325, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:07:47,475 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 23 states. [2020-10-13 13:07:47,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:47,803 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-10-13 13:07:47,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 13:07:47,804 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 109 [2020-10-13 13:07:47,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:47,806 INFO L225 Difference]: With dead ends: 70 [2020-10-13 13:07:47,806 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 13:07:47,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=555, Invalid=1005, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 13:07:47,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 13:07:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-13 13:07:47,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-13 13:07:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-10-13 13:07:47,812 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 109 [2020-10-13 13:07:47,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:47,812 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-10-13 13:07:47,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 13:07:47,812 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-10-13 13:07:47,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 13:07:47,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:47,814 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:47,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 13:07:47,814 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:47,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:47,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1300351236, now seen corresponding path program 17 times [2020-10-13 13:07:47,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:47,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978863876] [2020-10-13 13:07:47,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:47,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:48,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:48,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:48,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-13 13:07:48,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:48,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1134 [2020-10-13 13:07:48,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-13 13:07:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:07:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 13:07:48,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:48,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:48,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:48,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:48,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:07:48,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:48,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:07:48,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:48,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:48,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:07:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:49,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:49,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:49,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 13:07:49,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:49,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-13 13:07:49,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-13 13:07:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 13:07:49,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:49,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:49,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:50,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:50,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 13:07:50,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:50,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-13 13:07:50,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-13 13:07:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-13 13:07:50,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:50,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:50,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:50,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:50,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 13:07:50,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:50,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-13 13:07:50,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:50,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-13 13:07:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 13:07:50,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:50,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:50,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:50,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:50,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:07:50,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:50,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-13 13:07:50,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-13 13:07:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 13:07:50,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:50,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:50,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:51,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:51,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 13:07:51,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:51,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-13 13:07:51,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:51,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 13:07:51,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:51,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 13:07:51,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:51,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:51,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:51,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:51,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 13:07:51,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:51,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-13 13:07:51,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:51,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 13:07:51,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 13:07:51,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-10-13 13:07:51,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:51,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:51,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:51,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 13:07:51,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:51,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-13 13:07:51,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:51,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 13:07:51,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:51,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 13:07:51,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:51,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:51,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:52,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:52,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 13:07:52,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:52,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-13 13:07:52,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:52,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 13:07:52,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:52,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 13:07:52,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:52,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:52,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:52,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:52,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 13:07:52,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:52,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-13 13:07:52,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 13:07:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 13:07:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:52,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:52,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:52,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:52,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 13:07:52,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:52,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 13:07:52,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:52,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 13:07:52,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:52,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 13:07:52,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:52,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:52,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:52,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:52,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:07:52,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:52,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 13:07:52,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:52,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 13:07:52,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:52,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:07:52,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:52,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:52,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:52,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:52,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:07:52,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:52,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 13:07:52,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:52,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:07:52,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:52,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:07:52,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:52,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:52,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:52,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:52,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:07:52,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:52,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 13:07:52,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:52,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:07:52,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:52,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:07:52,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:52,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:52,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:52,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:52,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:07:52,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:52,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 13:07:52,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:52,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:07:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:07:52,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:52,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:52,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:52,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:52,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:07:52,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:52,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:07:52,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:52,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:07:52,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:52,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:07:52,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:52,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:52,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:52,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:52,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:07:52,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:52,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:07:52,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:52,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:07:52,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:52,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:07:52,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:52,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:52,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:52,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:52,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:07:52,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:52,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:07:52,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:52,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:07:52,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:07:52,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:53,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:53,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:53,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:53,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:07:53,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:53,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:07:53,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:07:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:07:53,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 54 proven. 513 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2020-10-13 13:07:53,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978863876] [2020-10-13 13:07:53,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:53,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 13:07:53,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410881612] [2020-10-13 13:07:53,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 13:07:53,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:53,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 13:07:53,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:07:53,126 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 23 states. [2020-10-13 13:07:53,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:53,462 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2020-10-13 13:07:53,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 13:07:53,463 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 115 [2020-10-13 13:07:53,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:53,464 INFO L225 Difference]: With dead ends: 73 [2020-10-13 13:07:53,465 INFO L226 Difference]: Without dead ends: 69 [2020-10-13 13:07:53,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=593, Invalid=1047, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 13:07:53,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-13 13:07:53,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-13 13:07:53,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 13:07:53,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2020-10-13 13:07:53,472 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 115 [2020-10-13 13:07:53,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:53,472 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2020-10-13 13:07:53,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 13:07:53,472 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2020-10-13 13:07:53,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 13:07:53,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:53,474 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:53,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 13:07:53,474 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:53,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:53,474 INFO L82 PathProgramCache]: Analyzing trace with hash 227065820, now seen corresponding path program 18 times [2020-10-13 13:07:53,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:53,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114671366] [2020-10-13 13:07:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:53,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:53,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:55,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:55,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 13:07:55,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:55,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2015 [2020-10-13 13:07:55,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:55,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-13 13:07:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:07:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 13:07:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:55,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:55,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:55,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:55,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:07:55,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:55,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:07:55,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:55,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:55,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:55,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:55,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:55,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:07:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:55,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:56,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:56,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 13:07:56,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:56,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-10-13 13:07:56,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:56,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-13 13:07:56,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-13 13:07:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:56,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:56,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:56,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:56,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 13:07:56,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:56,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 627 [2020-10-13 13:07:56,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-13 13:07:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 13:07:56,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:56,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:56,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:57,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:57,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 13:07:57,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:57,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-13 13:07:57,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-13 13:07:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-13 13:07:57,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:57,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:57,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:57,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:57,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 13:07:57,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:57,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-13 13:07:57,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-13 13:07:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 13:07:57,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:57,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:57,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:58,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:07:58,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:58,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-13 13:07:58,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-13 13:07:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 13:07:58,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:58,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:58,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:58,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 13:07:58,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:58,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-13 13:07:58,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:58,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 13:07:58,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:58,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 13:07:58,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:58,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:58,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:58,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 13:07:58,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-13 13:07:58,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 13:07:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 13:07:58,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:58,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:59,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:59,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 13:07:59,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:59,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-13 13:07:59,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:59,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 13:07:59,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:59,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 13:07:59,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:59,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:59,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:59,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:59,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 13:07:59,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:59,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-13 13:07:59,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:59,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 13:07:59,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:59,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 13:07:59,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:59,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:59,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:59,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 13:07:59,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:59,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 13:07:59,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:59,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 13:07:59,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:59,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 13:07:59,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:59,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:59,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:59,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:59,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 13:07:59,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:59,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-13 13:07:59,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:59,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 13:07:59,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:59,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 13:07:59,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:59,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:59,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:59,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:59,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:07:59,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:59,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 13:07:59,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:59,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 13:07:59,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:59,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:07:59,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:59,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:07:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:59,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:00,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:08:00,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:00,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 13:08:00,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:08:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:08:00,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:00,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:00,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:00,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:08:00,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:00,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 13:08:00,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:00,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:08:00,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:00,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:08:00,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:00,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:00,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:00,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:08:00,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:00,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:08:00,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:08:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:08:00,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:00,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:00,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:00,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:08:00,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:00,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:08:00,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:08:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:08:00,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:00,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:00,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:00,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:08:00,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:00,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:08:00,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:08:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:08:00,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:00,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:00,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:00,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:08:00,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:00,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:08:00,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:00,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:08:00,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:00,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:08:00,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:00,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:00,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:00,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:08:00,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:00,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:08:00,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:08:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:00,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:08:00,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:00,467 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 86 proven. 580 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2020-10-13 13:08:00,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114671366] [2020-10-13 13:08:00,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:00,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 13:08:00,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813000442] [2020-10-13 13:08:00,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 13:08:00,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:00,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 13:08:00,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=335, Unknown=0, NotChecked=0, Total=552 [2020-10-13 13:08:00,470 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 24 states. [2020-10-13 13:08:00,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:00,824 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-10-13 13:08:00,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 13:08:00,825 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 121 [2020-10-13 13:08:00,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:00,826 INFO L225 Difference]: With dead ends: 76 [2020-10-13 13:08:00,827 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 13:08:00,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=654, Invalid=1152, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 13:08:00,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 13:08:00,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-13 13:08:00,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-13 13:08:00,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2020-10-13 13:08:00,833 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 121 [2020-10-13 13:08:00,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:00,834 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2020-10-13 13:08:00,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 13:08:00,834 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2020-10-13 13:08:00,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 13:08:00,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:00,835 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:00,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 13:08:00,836 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:00,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:00,836 INFO L82 PathProgramCache]: Analyzing trace with hash -479687356, now seen corresponding path program 19 times [2020-10-13 13:08:00,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:00,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568086844] [2020-10-13 13:08:00,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:00,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:01,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:03,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:03,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 13:08:03,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:03,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3007 [2020-10-13 13:08:03,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:03,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-13 13:08:03,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:08:03,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 13:08:03,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:03,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:03,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:03,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:03,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:08:03,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:03,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:08:03,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:03,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:03,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:03,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:03,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:08:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:04,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:04,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:04,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 13:08:04,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:04,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 825 [2020-10-13 13:08:04,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:04,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-13 13:08:04,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:08:04,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-13 13:08:04,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:04,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:04,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:05,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:05,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 13:08:05,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 680 [2020-10-13 13:08:05,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-13 13:08:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-13 13:08:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:05,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:05,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:06,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:06,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 13:08:06,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:06,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-13 13:08:06,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-13 13:08:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 13:08:06,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:06,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:06,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:06,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:06,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 13:08:06,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:06,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-10-13 13:08:06,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-13 13:08:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-13 13:08:06,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:06,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:06,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:07,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:07,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 13:08:07,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:07,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-13 13:08:07,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:07,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-13 13:08:07,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:07,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 13:08:07,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:07,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:07,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:07,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:07,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:08:07,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:07,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-13 13:08:07,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-13 13:08:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 13:08:07,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:07,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:07,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:07,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:07,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 13:08:07,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:07,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-13 13:08:07,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 13:08:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:07,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 13:08:07,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:07,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:07,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:08,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:08,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 13:08:08,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:08,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-13 13:08:08,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:08,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 13:08:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 13:08:08,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:08,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:08,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:08,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:08,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 13:08:08,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:08,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-13 13:08:08,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 13:08:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 13:08:08,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:08,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:08,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:08,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:08,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 13:08:08,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:08,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-13 13:08:08,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:08,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 13:08:08,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:08,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 13:08:08,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:08,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:08,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:08,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:08,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 13:08:08,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:08,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 13:08:08,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:08,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 13:08:08,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:08,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 13:08:08,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:08,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:08,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:08,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:08,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 13:08:08,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:08,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 13:08:08,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:08,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 13:08:08,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:08,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 13:08:08,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:08,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:08,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:08,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:08,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:08:08,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:08,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 13:08:08,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 13:08:08,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:08,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:08:08,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:08,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:08,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:09,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:08:09,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:09,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 13:08:09,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:09,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:08:09,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:09,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:08:09,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:09,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:09,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:09,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:08:09,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:09,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 13:08:09,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:09,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:08:09,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:09,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:08:09,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:09,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:09,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:09,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:08:09,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:09,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:08:09,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:08:09,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:09,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:08:09,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:09,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:09,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:09,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:08:09,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:09,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:08:09,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:08:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:08:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:09,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:09,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:09,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:08:09,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:09,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:08:09,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:09,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:08:09,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:08:09,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:09,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:09,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:09,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:08:09,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:09,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:08:09,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:09,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:08:09,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:09,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:08:09,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:09,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:09,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:09,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:08:09,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:09,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:08:09,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:09,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:08:09,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:09,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:08:09,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 66 proven. 674 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2020-10-13 13:08:09,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568086844] [2020-10-13 13:08:09,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:09,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 13:08:09,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139841507] [2020-10-13 13:08:09,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 13:08:09,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:09,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 13:08:09,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=362, Unknown=0, NotChecked=0, Total=600 [2020-10-13 13:08:09,492 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 25 states. [2020-10-13 13:08:09,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:09,852 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-10-13 13:08:09,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 13:08:09,853 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 127 [2020-10-13 13:08:09,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:09,854 INFO L225 Difference]: With dead ends: 79 [2020-10-13 13:08:09,855 INFO L226 Difference]: Without dead ends: 75 [2020-10-13 13:08:09,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=718, Invalid=1262, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 13:08:09,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-13 13:08:09,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-13 13:08:09,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 13:08:09,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-10-13 13:08:09,862 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 127 [2020-10-13 13:08:09,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:09,862 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-10-13 13:08:09,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 13:08:09,862 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-10-13 13:08:09,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-13 13:08:09,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:09,863 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:09,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 13:08:09,864 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:09,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:09,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1598174692, now seen corresponding path program 20 times [2020-10-13 13:08:09,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:09,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606124205] [2020-10-13 13:08:09,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:09,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:11,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:11,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 13:08:11,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:11,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1794 [2020-10-13 13:08:11,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:11,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 86 [2020-10-13 13:08:11,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 13:08:11,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-13 13:08:11,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:11,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:11,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:11,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:11,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 13:08:11,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:11,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:11,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:11,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:11,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 13:08:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:11,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:14,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 13:08:14,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:14,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2440 [2020-10-13 13:08:14,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 85 [2020-10-13 13:08:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-13 13:08:14,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:14,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:14,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:15,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:15,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 13:08:15,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:15,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1576 [2020-10-13 13:08:15,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:15,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 82 [2020-10-13 13:08:15,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:15,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-13 13:08:15,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:15,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:15,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:17,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:17,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 13:08:17,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:17,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1404 [2020-10-13 13:08:17,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 78 [2020-10-13 13:08:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-13 13:08:17,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:17,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:17,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:18,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:18,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 13:08:18,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:18,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1232 [2020-10-13 13:08:18,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:18,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 74 [2020-10-13 13:08:18,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:18,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 13:08:18,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:18,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:18,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:19,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 13:08:19,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:19,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-10-13 13:08:19,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:19,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 70 [2020-10-13 13:08:19,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:19,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-13 13:08:19,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:19,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:19,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:20,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:20,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 13:08:20,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:20,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 921 [2020-10-13 13:08:20,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 66 [2020-10-13 13:08:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 13:08:20,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:20,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:20,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:21,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:21,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:08:21,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:21,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 795 [2020-10-13 13:08:21,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:21,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-10-13 13:08:21,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 13:08:21,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:21,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:21,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:22,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:22,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 13:08:22,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:22,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-10-13 13:08:22,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:22,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-13 13:08:22,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:22,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 13:08:22,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:22,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:22,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:22,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:22,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 13:08:22,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-10-13 13:08:22,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-13 13:08:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 13:08:22,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:22,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:22,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:23,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:23,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 13:08:23,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:23,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-10-13 13:08:23,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-13 13:08:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 13:08:23,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:23,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:23,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:23,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:23,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 13:08:23,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:23,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-13 13:08:23,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-13 13:08:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 13:08:23,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:23,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:23,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:24,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 13:08:24,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:24,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-13 13:08:24,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-13 13:08:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 13:08:24,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:24,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:24,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:24,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 13:08:24,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:24,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-13 13:08:24,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:24,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-13 13:08:24,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:24,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 13:08:24,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:24,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:24,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:24,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 13:08:24,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:24,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-13 13:08:24,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-13 13:08:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:08:24,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:24,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:24,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:24,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 13:08:24,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:24,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-13 13:08:24,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 13:08:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:08:24,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:24,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:24,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:25,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:08:25,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:25,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 13:08:25,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:25,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 13:08:25,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:25,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:08:25,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:25,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:25,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:25,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:25,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 13:08:25,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:25,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 13:08:25,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 13:08:25,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:25,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:08:25,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:25,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:25,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:25,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:25,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 13:08:25,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:25,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 13:08:25,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:25,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 13:08:25,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:25,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:08:25,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:25,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:25,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:25,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:25,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 13:08:25,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:25,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 13:08:25,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:25,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:08:25,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:25,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:08:25,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:25,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:25,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:25,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:25,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:08:25,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:25,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:08:25,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:08:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:08:25,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:25,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 13:08:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:25,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:25,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:25,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:08:25,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:25,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:08:25,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:08:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:08:25,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 96 proven. 86 refuted. 0 times theorem prover too weak. 1038 trivial. 0 not checked. [2020-10-13 13:08:25,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606124205] [2020-10-13 13:08:25,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:25,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:08:25,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262015677] [2020-10-13 13:08:25,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:08:25,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:25,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:08:25,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:08:25,419 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 8 states. [2020-10-13 13:08:25,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:25,489 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-10-13 13:08:25,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:08:25,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2020-10-13 13:08:25,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:25,490 INFO L225 Difference]: With dead ends: 75 [2020-10-13 13:08:25,490 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 13:08:25,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:08:25,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 13:08:25,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 13:08:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 13:08:25,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 13:08:25,491 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 133 [2020-10-13 13:08:25,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:25,492 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 13:08:25,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:08:25,492 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 13:08:25,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 13:08:25,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 13:08:25,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-13 13:08:25,536 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-13 13:08:25,537 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-13 13:08:25,537 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-13 13:08:25,537 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-13 13:08:25,537 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-13 13:08:25,537 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-13 13:08:25,537 INFO L268 CegarLoopResult]: For program point sumEXIT(lines 3 9) no Hoare annotation was computed. [2020-10-13 13:08:25,537 INFO L264 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|)) [2020-10-13 13:08:25,538 INFO L268 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-13 13:08:25,538 INFO L268 CegarLoopResult]: For program point L4(lines 4 8) no Hoare annotation was computed. [2020-10-13 13:08:25,538 INFO L268 CegarLoopResult]: For program point sumFINAL(lines 3 9) no Hoare annotation was computed. [2020-10-13 13:08:25,538 INFO L271 CegarLoopResult]: At program point sumENTRY(lines 3 9) the Hoare annotation is: true [2020-10-13 13:08:25,538 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-10-13 13:08:25,538 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2020-10-13 13:08:25,538 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2020-10-13 13:08:25,539 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-10-13 13:08:25,539 INFO L268 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-10-13 13:08:25,539 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= main_~a~0 20) [2020-10-13 13:08:25,539 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-10-13 13:08:25,539 INFO L268 CegarLoopResult]: For program point L15-2(lines 11 18) no Hoare annotation was computed. [2020-10-13 13:08:25,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:08:25 BoogieIcfgContainer [2020-10-13 13:08:25,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 13:08:25,548 INFO L168 Benchmark]: Toolchain (without parser) took 87813.84 ms. Allocated memory was 148.4 MB in the beginning and 1.1 GB in the end (delta: 981.5 MB). Free memory was 105.2 MB in the beginning and 128.6 MB in the end (delta: -23.4 MB). Peak memory consumption was 958.0 MB. Max. memory is 7.1 GB. [2020-10-13 13:08:25,549 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 13:08:25,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.44 ms. Allocated memory is still 148.4 MB. Free memory was 105.0 MB in the beginning and 95.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-10-13 13:08:25,550 INFO L168 Benchmark]: Boogie Preprocessor took 29.44 ms. Allocated memory is still 148.4 MB. Free memory was 95.7 MB in the beginning and 94.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-13 13:08:25,551 INFO L168 Benchmark]: RCFGBuilder took 336.66 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 94.3 MB in the beginning and 174.2 MB in the end (delta: -79.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-13 13:08:25,551 INFO L168 Benchmark]: TraceAbstraction took 87205.81 ms. Allocated memory was 205.5 MB in the beginning and 1.1 GB in the end (delta: 924.3 MB). Free memory was 173.6 MB in the beginning and 128.6 MB in the end (delta: 45.0 MB). Peak memory consumption was 969.3 MB. Max. memory is 7.1 GB. [2020-10-13 13:08:25,554 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 236.44 ms. Allocated memory is still 148.4 MB. Free memory was 105.0 MB in the beginning and 95.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.44 ms. Allocated memory is still 148.4 MB. Free memory was 95.7 MB in the beginning and 94.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 336.66 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 94.3 MB in the beginning and 174.2 MB in the end (delta: -79.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 87205.81 ms. Allocated memory was 205.5 MB in the beginning and 1.1 GB in the end (delta: 924.3 MB). Free memory was 173.6 MB in the beginning and 128.6 MB in the end (delta: 45.0 MB). Peak memory consumption was 969.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 87.0s, OverallIterations: 21, TraceHistogramMax: 21, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 252 SDtfs, 927 SDslu, 1253 SDs, 0 SdLazy, 918 SolverSat, 251 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1031 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 489 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2662 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 15 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 81.8s InterpolantComputationTime, 1533 NumberOfCodeBlocks, 1533 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1512 ConstructedInterpolants, 0 QuantifiedInterpolants, 468444 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 1 PerfectInterpolantSequences, 4332/8820 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...