/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_20x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:04:27,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:04:27,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:04:27,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:04:27,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:04:27,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:04:27,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:04:27,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:04:27,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:04:27,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:04:27,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:04:27,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:04:27,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:04:27,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:04:27,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:04:27,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:04:27,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:04:27,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:04:27,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:04:27,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:04:27,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:04:27,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:04:27,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:04:27,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:04:27,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:04:27,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:04:27,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:04:27,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:04:27,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:04:27,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:04:27,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:04:27,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:04:27,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:04:27,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:04:27,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:04:27,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:04:27,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:04:27,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:04:27,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:04:27,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:04:27,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:04:27,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:04:27,532 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:04:27,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:04:27,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:04:27,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:04:27,534 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:04:27,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:04:27,535 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:04:27,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:04:27,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:04:27,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:04:27,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:04:27,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:04:27,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:04:27,536 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:04:27,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:04:27,537 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:04:27,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:04:27,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:04:27,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:04:27,538 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:04:27,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:04:27,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:04:27,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:04:27,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:04:27,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:04:27,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:04:27,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:04:27,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:04:27,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:04:27,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 02:04:28,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:04:28,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:04:28,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:04:28,054 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:04:28,055 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:04:28,057 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_20x0-1.c [2020-09-25 02:04:28,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f5bf3aeb/b27095d0ca8646f69a0fe730f76cc081/FLAGb779e96f8 [2020-09-25 02:04:28,689 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:04:28,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_20x0-1.c [2020-09-25 02:04:28,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f5bf3aeb/b27095d0ca8646f69a0fe730f76cc081/FLAGb779e96f8 [2020-09-25 02:04:29,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f5bf3aeb/b27095d0ca8646f69a0fe730f76cc081 [2020-09-25 02:04:29,075 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:04:29,081 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:04:29,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:04:29,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:04:29,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:04:29,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:04:29" (1/1) ... [2020-09-25 02:04:29,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50641913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:29, skipping insertion in model container [2020-09-25 02:04:29,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:04:29" (1/1) ... [2020-09-25 02:04:29,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:04:29,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:04:29,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:04:29,340 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:04:29,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:04:29,384 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:04:29,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:29 WrapperNode [2020-09-25 02:04:29,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:04:29,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:04:29,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:04:29,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:04:29,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:29" (1/1) ... [2020-09-25 02:04:29,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:29" (1/1) ... [2020-09-25 02:04:29,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:29" (1/1) ... [2020-09-25 02:04:29,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:29" (1/1) ... [2020-09-25 02:04:29,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:29" (1/1) ... [2020-09-25 02:04:29,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:29" (1/1) ... [2020-09-25 02:04:29,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:29" (1/1) ... [2020-09-25 02:04:29,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:04:29,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:04:29,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:04:29,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:04:29,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:04:29,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:04:29,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:04:29,594 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-25 02:04:29,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:04:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:04:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-25 02:04:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:04:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:04:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:04:29,829 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:04:29,829 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:04:29,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:04:29 BoogieIcfgContainer [2020-09-25 02:04:29,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:04:29,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:04:29,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:04:29,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:04:29,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:04:29" (1/3) ... [2020-09-25 02:04:29,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbd6385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:04:29, skipping insertion in model container [2020-09-25 02:04:29,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:29" (2/3) ... [2020-09-25 02:04:29,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbd6385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:04:29, skipping insertion in model container [2020-09-25 02:04:29,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:04:29" (3/3) ... [2020-09-25 02:04:29,867 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_20x0-1.c [2020-09-25 02:04:29,890 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:04:29,901 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:04:29,924 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:04:29,957 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:04:29,957 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:04:29,957 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:04:29,958 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:04:29,958 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:04:29,958 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:04:29,958 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:04:29,958 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:04:29,980 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 02:04:29,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 02:04:29,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:29,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:29,989 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:29,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:29,996 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-25 02:04:30,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:30,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66408469] [2020-09-25 02:04:30,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:30,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:30,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:30,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:30,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 02:04:30,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:30,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 02:04:30,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:30,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:04:30,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:30,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:04:30,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 02:04:30,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:30,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:30,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:30,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:30,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:30,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:04:30,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:30,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:30,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:30,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:30,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:30,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:30,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:30,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:30,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:30,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:30,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 02:04:30,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:30,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:04:30,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:30,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:04:30,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:04:30,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66408469] [2020-09-25 02:04:30,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:04:30,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:04:30,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833021887] [2020-09-25 02:04:30,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:04:30,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:30,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:04:30,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:04:30,545 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-25 02:04:30,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:30,663 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-25 02:04:30,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:04:30,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 02:04:30,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:30,682 INFO L225 Difference]: With dead ends: 39 [2020-09-25 02:04:30,683 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 02:04:30,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:04:30,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 02:04:30,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-25 02:04:30,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 02:04:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-25 02:04:30,746 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-25 02:04:30,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:30,747 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-25 02:04:30,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:04:30,747 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-25 02:04:30,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 02:04:30,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:30,750 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:30,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:04:30,751 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:30,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:30,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-25 02:04:30,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:30,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292033948] [2020-09-25 02:04:30,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:30,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:30,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:31,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:31,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:04:31,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:31,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-09-25 02:04:31,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:31,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:04:31,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:31,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:04:31,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:31,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:31,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:31,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:31,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:31,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:31,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:04:31,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:31,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:31,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:31,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:31,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:04:31,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:31,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:31,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:31,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:31,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:31,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 02:04:31,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:31,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:04:31,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:31,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:04:31,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:31,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:31,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:31,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:31,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:31,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:31,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:04:31,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:31,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:31,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:31,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:31,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:31,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:04:31,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292033948] [2020-09-25 02:04:31,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:31,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:04:31,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530852956] [2020-09-25 02:04:31,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:04:31,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:31,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:04:31,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:04:31,665 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 7 states. [2020-09-25 02:04:31,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:31,738 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-25 02:04:31,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:04:31,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-25 02:04:31,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:31,740 INFO L225 Difference]: With dead ends: 36 [2020-09-25 02:04:31,741 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:04:31,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:04:31,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:04:31,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 02:04:31,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 02:04:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 02:04:31,750 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-25 02:04:31,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:31,750 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 02:04:31,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:04:31,751 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 02:04:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 02:04:31,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:31,752 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:31,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:04:31,753 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:31,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:31,753 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-25 02:04:31,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:31,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014806623] [2020-09-25 02:04:31,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:31,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:31,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:32,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:32,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 02:04:32,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:32,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-09-25 02:04:32,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:32,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:04:32,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:32,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:32,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:32,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:32,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:32,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:32,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:32,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:32,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:04:32,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:32,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:32,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:32,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:32,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:32,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:32,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:32,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:32,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:32,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:32,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 02:04:32,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:04:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:04:32,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:32,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:32,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:32,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:32,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:32,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:32,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 02:04:32,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:32,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:32,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:32,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:32,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:32,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:32,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:32,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:32,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:32,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:32,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:04:32,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:32,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:32,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:32,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:32,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:32,627 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 02:04:32,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014806623] [2020-09-25 02:04:32,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:32,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:04:32,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916718553] [2020-09-25 02:04:32,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:04:32,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:32,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:04:32,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:04:32,632 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2020-09-25 02:04:32,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:32,750 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-09-25 02:04:32,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:04:32,752 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-25 02:04:32,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:32,754 INFO L225 Difference]: With dead ends: 41 [2020-09-25 02:04:32,754 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 02:04:32,756 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 [2020-09-25 02:04:32,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 02:04:32,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-25 02:04:32,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 02:04:32,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-25 02:04:32,776 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-09-25 02:04:32,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:32,776 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-25 02:04:32,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:04:32,778 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-25 02:04:32,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 02:04:32,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:32,781 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:32,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:04:32,783 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:32,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:32,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-09-25 02:04:32,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:32,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827588412] [2020-09-25 02:04:32,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:32,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:33,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 02:04:33,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:33,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 875 [2020-09-25 02:04:33,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:33,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:04:33,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:33,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 02:04:33,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:33,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:33,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:33,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:33,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:33,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:33,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:33,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:33,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:33,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:33,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:33,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:33,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:33,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:33,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 02:04:33,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:33,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:04:33,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:33,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 02:04:33,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:33,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:33,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:33,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:33,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:33,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 02:04:34,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:34,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:34,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:34,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:34,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 02:04:34,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:34,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:34,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:34,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:34,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:34,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:34,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:04:34,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:34,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:34,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:34,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:34,146 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 02:04:34,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827588412] [2020-09-25 02:04:34,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:34,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:04:34,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063834907] [2020-09-25 02:04:34,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:04:34,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:34,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:04:34,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:04:34,149 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states. [2020-09-25 02:04:34,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:34,256 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-25 02:04:34,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:04:34,257 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 02:04:34,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:34,258 INFO L225 Difference]: With dead ends: 46 [2020-09-25 02:04:34,258 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 02:04:34,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:04:34,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 02:04:34,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 02:04:34,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:04:34,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-25 02:04:34,267 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-09-25 02:04:34,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:34,268 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-25 02:04:34,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:04:34,268 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-25 02:04:34,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 02:04:34,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:34,270 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:34,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:04:34,270 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:34,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:34,271 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-09-25 02:04:34,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:34,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72905187] [2020-09-25 02:04:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:36,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 02:04:36,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:36,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1983 [2020-09-25 02:04:36,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:36,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:04:36,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:36,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 02:04:36,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:36,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:36,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:36,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:36,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:36,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:36,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:36,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:36,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:36,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:36,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:36,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:36,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:36,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 02:04:36,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:36,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:04:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:04:36,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:36,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:36,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:36,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:36,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:36,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 02:04:36,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:36,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:36,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:36,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:36,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:36,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:36,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:36,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:36,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:36,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 02:04:36,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:36,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:36,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:36,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:36,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:36,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:36,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 02:04:36,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:36,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:36,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:36,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:37,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:37,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:37,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:37,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 02:04:37,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:37,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:37,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:37,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:37,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 02:04:37,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72905187] [2020-09-25 02:04:37,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:37,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:04:37,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071178471] [2020-09-25 02:04:37,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:04:37,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:37,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:04:37,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:04:37,048 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 9 states. [2020-09-25 02:04:37,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:37,159 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 02:04:37,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:04:37,160 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-09-25 02:04:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:37,161 INFO L225 Difference]: With dead ends: 51 [2020-09-25 02:04:37,162 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 02:04:37,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:04:37,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 02:04:37,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 02:04:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 02:04:37,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-25 02:04:37,170 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-09-25 02:04:37,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:37,171 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-25 02:04:37,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:04:37,171 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-25 02:04:37,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 02:04:37,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:37,173 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:37,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:04:37,173 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:37,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:37,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-09-25 02:04:37,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:37,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888060849] [2020-09-25 02:04:37,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:37,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:37,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:41,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:41,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 02:04:41,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:41,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3846 [2020-09-25 02:04:41,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:41,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:04:41,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:41,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:04:41,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:41,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:41,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:41,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:41,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:41,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:41,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:41,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:41,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:41,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:41,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:41,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:41,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:41,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:41,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:41,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:41,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:41,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-25 02:04:41,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:41,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:04:41,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 02:04:41,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:41,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:41,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:41,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:41,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:41,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:41,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 02:04:41,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:41,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:41,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:41,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:41,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:41,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:41,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:41,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:41,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:41,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:41,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 02:04:41,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:41,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:41,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:41,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:41,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:41,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:41,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:41,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:41,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:41,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 02:04:41,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:41,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:41,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:41,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:42,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:42,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:42,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:42,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 02:04:42,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:42,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:42,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:42,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:42,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:42,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:42,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:42,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:42,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:42,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:04:42,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:42,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:42,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:42,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:42,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:42,090 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 72 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 02:04:42,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888060849] [2020-09-25 02:04:42,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:42,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:04:42,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369267052] [2020-09-25 02:04:42,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:04:42,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:42,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:04:42,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:04:42,094 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 11 states. [2020-09-25 02:04:42,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:42,239 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-09-25 02:04:42,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 02:04:42,240 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-25 02:04:42,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:42,241 INFO L225 Difference]: With dead ends: 56 [2020-09-25 02:04:42,241 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 02:04:42,242 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 [2020-09-25 02:04:42,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 02:04:42,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 02:04:42,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 02:04:42,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 02:04:42,250 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-09-25 02:04:42,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:42,250 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 02:04:42,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:04:42,251 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 02:04:42,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 02:04:42,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:42,252 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:42,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:04:42,253 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:42,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:42,253 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-09-25 02:04:42,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:42,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568369809] [2020-09-25 02:04:42,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:42,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:42,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:46,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:46,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-25 02:04:46,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:46,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4039 [2020-09-25 02:04:46,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:04:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 02:04:46,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:46,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:46,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:46,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:46,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:46,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:46,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:46,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:46,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:46,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:46,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:46,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:46,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:46,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:46,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:46,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:04:46,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:46,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-09-25 02:04:46,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:46,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:04:46,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 02:04:46,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:46,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:46,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:47,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-25 02:04:47,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:47,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:04:47,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:47,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:47,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 02:04:47,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:47,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:47,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:47,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:47,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 02:04:47,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:47,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:47,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:47,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:47,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:47,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 02:04:47,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:47,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:47,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:47,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:47,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:47,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 02:04:47,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:47,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:47,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:47,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:47,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:47,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:04:47,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:47,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:47,726 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-09-25 02:04:47,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568369809] [2020-09-25 02:04:47,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:47,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 02:04:47,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103846807] [2020-09-25 02:04:47,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:04:47,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:47,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:04:47,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:04:47,731 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 12 states. [2020-09-25 02:04:47,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:47,881 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-25 02:04:47,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:04:47,882 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-25 02:04:47,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:47,883 INFO L225 Difference]: With dead ends: 61 [2020-09-25 02:04:47,886 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 02:04:47,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-25 02:04:47,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 02:04:47,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 02:04:47,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 02:04:47,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-09-25 02:04:47,901 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-09-25 02:04:47,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:47,901 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-09-25 02:04:47,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:04:47,902 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-09-25 02:04:47,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 02:04:47,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:47,906 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:47,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:04:47,906 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:47,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:47,907 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-09-25 02:04:47,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:47,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179030210] [2020-09-25 02:04:47,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:48,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:52,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:52,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 02:04:52,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:52,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:04:52,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:52,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 02:04:52,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:04:52,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 02:04:52,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:52,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:52,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:52,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:52,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:52,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:52,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:52,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:52,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:52,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:52,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:52,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:53,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:53,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:04:53,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-09-25 02:04:53,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:53,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 02:04:53,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:53,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 02:04:53,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:53,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:53,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:53,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:53,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:04:53,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:53,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-09-25 02:04:53,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:53,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:53,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:53,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:04:53,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:53,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:53,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:04:54,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-25 02:04:54,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:04:54,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:54,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:54,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 02:04:54,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:54,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:54,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:04:54,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:54,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:04:54,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 02:04:54,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:54,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:54,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:54,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:54,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:04:54,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 02:04:54,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:54,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:54,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:54,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:04:54,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 02:04:54,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:04:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:54,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:04:54,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:04:54,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:04:54,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:04:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 139 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-25 02:04:54,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179030210] [2020-09-25 02:04:54,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:54,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 02:04:54,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602920249] [2020-09-25 02:04:54,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 02:04:54,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:54,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 02:04:54,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:04:54,898 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 13 states. [2020-09-25 02:04:55,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:55,166 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-09-25 02:04:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:04:55,166 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-09-25 02:04:55,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:55,168 INFO L225 Difference]: With dead ends: 66 [2020-09-25 02:04:55,168 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 02:04:55,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=303, Unknown=0, NotChecked=0, Total=462 [2020-09-25 02:04:55,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 02:04:55,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 02:04:55,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 02:04:55,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 02:04:55,176 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-09-25 02:04:55,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:55,176 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 02:04:55,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 02:04:55,177 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 02:04:55,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 02:04:55,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:55,178 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:55,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:04:55,179 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:55,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:55,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-09-25 02:04:55,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:55,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392699095] [2020-09-25 02:04:55,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:55,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:55,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:00,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:00,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 02:05:00,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:05:00,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 02:05:00,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:00,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 02:05:00,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:05:00,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 02:05:00,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:00,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:05:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:00,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:00,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:00,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:05:00,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:00,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:05:00,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:00,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:00,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:00,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:00,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:00,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:05:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:00,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:00,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:00,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 02:05:00,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:00,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-09-25 02:05:00,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 02:05:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:05:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 02:05:00,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:00,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:00,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:01,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:01,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:05:01,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:01,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-09-25 02:05:01,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:01,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:05:01,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:01,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:05:01,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:01,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:01,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:01,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:01,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:05:01,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:01,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-09-25 02:05:01,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:05:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:05:01,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:01,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:01,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:01,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:01,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:05:01,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:01,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-25 02:05:01,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:05:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:05:01,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:01,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:01,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:02,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:02,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:05:02,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 02:05:02,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:05:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:05:02,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:02,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:02,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:02,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:02,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:05:02,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:02,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 02:05:02,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:05:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:05:02,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:02,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:02,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:02,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:02,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:05:02,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 02:05:02,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:05:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:05:02,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:02,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:02,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:02,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:02,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:05:02,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:02,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 02:05:02,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:02,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:05:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:05:02,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:02,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:02,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:02,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:02,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:05:02,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:02,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:05:02,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:02,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:05:02,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:02,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:05:02,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 3 proven. 196 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-09-25 02:05:02,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392699095] [2020-09-25 02:05:02,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:05:02,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 02:05:02,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631065234] [2020-09-25 02:05:02,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 02:05:02,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:05:02,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 02:05:02,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:05:02,638 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 15 states. [2020-09-25 02:05:02,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:05:02,837 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 02:05:02,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:05:02,838 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 90 [2020-09-25 02:05:02,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:05:02,840 INFO L225 Difference]: With dead ends: 71 [2020-09-25 02:05:02,840 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 02:05:02,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=361, Unknown=0, NotChecked=0, Total=552 [2020-09-25 02:05:02,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 02:05:02,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 02:05:02,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 02:05:02,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-09-25 02:05:02,857 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-09-25 02:05:02,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:05:02,859 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-09-25 02:05:02,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 02:05:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-09-25 02:05:02,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 02:05:02,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:05:02,864 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:05:02,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:05:02,865 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:05:02,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:05:02,865 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-09-25 02:05:02,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:05:02,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825242387] [2020-09-25 02:05:02,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:05:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:02,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:03,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:07,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:07,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 02:05:07,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:05:07,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 02:05:07,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 02:05:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:05:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 02:05:07,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:07,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:05:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:07,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:07,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:07,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:05:07,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:07,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:05:07,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:07,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:07,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:05:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:07,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:08,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:08,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 02:05:08,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:08,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-09-25 02:05:08,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:08,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 02:05:08,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:05:08,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 02:05:08,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:08,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:08,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:08,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:08,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 02:05:08,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:08,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-09-25 02:05:08,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:05:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 02:05:08,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:08,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:09,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:09,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:09,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:05:09,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:09,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-09-25 02:05:09,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:05:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:05:09,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:09,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:09,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:09,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:09,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:05:09,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:09,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-09-25 02:05:09,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:05:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:05:09,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:09,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:09,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:10,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:10,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:05:10,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:10,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-25 02:05:10,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:10,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:05:10,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:10,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:05:10,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:10,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:10,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:10,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:10,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:05:10,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:10,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 02:05:10,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:10,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:05:10,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:10,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:05:10,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:10,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:10,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:10,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:10,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:05:10,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:10,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 02:05:10,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:05:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:05:10,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:10,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:10,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:10,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:10,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:05:10,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:10,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 02:05:10,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:10,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:05:10,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:10,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:05:10,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:10,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:10,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:10,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:05:10,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:10,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 02:05:10,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:05:10,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:10,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:05:10,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:10,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:10,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:10,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:10,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:05:10,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:10,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 02:05:10,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:10,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:05:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:05:10,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 27 proven. 237 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-09-25 02:05:10,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825242387] [2020-09-25 02:05:10,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:05:10,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 02:05:10,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283369883] [2020-09-25 02:05:10,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 02:05:10,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:05:10,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 02:05:10,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:05:10,705 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 15 states. [2020-09-25 02:05:10,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:05:10,881 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-09-25 02:05:10,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 02:05:10,882 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 99 [2020-09-25 02:05:10,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:05:10,884 INFO L225 Difference]: With dead ends: 76 [2020-09-25 02:05:10,884 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 02:05:10,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-25 02:05:10,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 02:05:10,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 02:05:10,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 02:05:10,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 02:05:10,892 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 99 [2020-09-25 02:05:10,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:05:10,892 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 02:05:10,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 02:05:10,893 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 02:05:10,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 02:05:10,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:05:10,894 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:05:10,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 02:05:10,894 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:05:10,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:05:10,894 INFO L82 PathProgramCache]: Analyzing trace with hash -276966773, now seen corresponding path program 10 times [2020-09-25 02:05:10,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:05:10,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415476973] [2020-09-25 02:05:10,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:05:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:10,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:11,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:15,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:15,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 02:05:15,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:05:15,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:05:15,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 02:05:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:05:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 02:05:15,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:15,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:05:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:15,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:15,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:15,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:05:15,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:15,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:05:15,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:15,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:15,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:15,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:15,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:05:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:15,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:16,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:16,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 02:05:16,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:16,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-09-25 02:05:16,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 02:05:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:05:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 02:05:16,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:16,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:16,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:17,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:17,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 02:05:17,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:17,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-09-25 02:05:17,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:17,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 02:05:17,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:17,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 02:05:17,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:17,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:17,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:17,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:17,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 02:05:17,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:17,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-09-25 02:05:17,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:05:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:17,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 02:05:17,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:17,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:17,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:18,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:18,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 02:05:18,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:18,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-09-25 02:05:18,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:05:18,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:18,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:05:18,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:18,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:18,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:18,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:18,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 02:05:18,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:18,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-09-25 02:05:18,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:18,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:05:18,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:18,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:05:18,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:18,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:18,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:19,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:19,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:05:19,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:19,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-25 02:05:19,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:05:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:19,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:05:19,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:05:19,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:19,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:19,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:19,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:05:19,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:19,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 02:05:19,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:05:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:05:19,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:19,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:19,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:19,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:19,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:05:19,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:19,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 02:05:19,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:19,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:05:19,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:19,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:05:19,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:19,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:19,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:19,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:19,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:05:19,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:19,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 02:05:19,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:05:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:19,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:05:19,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:19,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:19,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:19,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:19,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:05:19,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:19,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 02:05:19,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:19,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:05:19,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:19,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:05:19,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:05:19,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:19,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:19,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:19,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:05:19,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:19,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:05:19,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:19,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:05:19,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:19,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:05:19,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:19,927 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 21 proven. 276 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-09-25 02:05:19,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415476973] [2020-09-25 02:05:19,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:05:19,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 02:05:19,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371823756] [2020-09-25 02:05:19,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:05:19,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:05:19,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:05:19,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:05:19,933 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 16 states. [2020-09-25 02:05:20,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:05:20,205 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-09-25 02:05:20,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 02:05:20,206 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-09-25 02:05:20,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:05:20,208 INFO L225 Difference]: With dead ends: 81 [2020-09-25 02:05:20,208 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 02:05:20,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-09-25 02:05:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 02:05:20,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-09-25 02:05:20,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 02:05:20,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-09-25 02:05:20,233 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 108 [2020-09-25 02:05:20,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:05:20,236 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-09-25 02:05:20,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:05:20,237 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-09-25 02:05:20,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 02:05:20,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:05:20,241 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:05:20,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 02:05:20,241 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:05:20,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:05:20,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1749540651, now seen corresponding path program 11 times [2020-09-25 02:05:20,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:05:20,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449725694] [2020-09-25 02:05:20,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:05:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:20,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking...