/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/id_o1000.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:03:44,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:03:44,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:03:44,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:03:44,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:03:44,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:03:45,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:03:45,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:03:45,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:03:45,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:03:45,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:03:45,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:03:45,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:03:45,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:03:45,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:03:45,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:03:45,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:03:45,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:03:45,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:03:45,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:03:45,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:03:45,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:03:45,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:03:45,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:03:45,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:03:45,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:03:45,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:03:45,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:03:45,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:03:45,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:03:45,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:03:45,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:03:45,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:03:45,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:03:45,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:03:45,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:03:45,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:03:45,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:03:45,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:03:45,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:03:45,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:03:45,078 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 02:03:45,124 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:03:45,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:03:45,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:03:45,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:03:45,128 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:03:45,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:03:45,128 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:03:45,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:03:45,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:03:45,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:03:45,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:03:45,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:03:45,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:03:45,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:03:45,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:03:45,131 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:03:45,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:03:45,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:03:45,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:03:45,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:03:45,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:03:45,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:03:45,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:03:45,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:03:45,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:03:45,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:03:45,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:03:45,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:03:45,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:03:45,134 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 02:03:45,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:03:45,591 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:03:45,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:03:45,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:03:45,598 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:03:45,599 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o1000.c [2020-09-25 02:03:45,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a3176ffe/e5f32a097c35487789b2d7b59e0b5771/FLAG80a95c388 [2020-09-25 02:03:46,241 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:03:46,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o1000.c [2020-09-25 02:03:46,253 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a3176ffe/e5f32a097c35487789b2d7b59e0b5771/FLAG80a95c388 [2020-09-25 02:03:46,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a3176ffe/e5f32a097c35487789b2d7b59e0b5771 [2020-09-25 02:03:46,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:03:46,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:03:46,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:03:46,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:03:46,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:03:46,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:03:46" (1/1) ... [2020-09-25 02:03:46,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d8d2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:46, skipping insertion in model container [2020-09-25 02:03:46,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:03:46" (1/1) ... [2020-09-25 02:03:46,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:03:46,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:03:46,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:03:46,880 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:03:46,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:03:46,918 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:03:46,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:46 WrapperNode [2020-09-25 02:03:46,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:03:46,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:03:46,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:03:46,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:03:46,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:46" (1/1) ... [2020-09-25 02:03:46,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:46" (1/1) ... [2020-09-25 02:03:46,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:46" (1/1) ... [2020-09-25 02:03:46,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:46" (1/1) ... [2020-09-25 02:03:46,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:46" (1/1) ... [2020-09-25 02:03:46,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:46" (1/1) ... [2020-09-25 02:03:46,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:46" (1/1) ... [2020-09-25 02:03:46,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:03:46,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:03:46,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:03:46,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:03:46,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:46" (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 02:03:47,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:03:47,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:03:47,116 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 02:03:47,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:03:47,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 02:03:47,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:03:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 02:03:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:03:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:03:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:03:47,294 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:03:47,295 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:03:47,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:03:47 BoogieIcfgContainer [2020-09-25 02:03:47,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:03:47,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:03:47,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:03:47,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:03:47,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:03:46" (1/3) ... [2020-09-25 02:03:47,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@288e5b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:03:47, skipping insertion in model container [2020-09-25 02:03:47,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:46" (2/3) ... [2020-09-25 02:03:47,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@288e5b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:03:47, skipping insertion in model container [2020-09-25 02:03:47,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:03:47" (3/3) ... [2020-09-25 02:03:47,310 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o1000.c [2020-09-25 02:03:47,320 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:03:47,328 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:03:47,348 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:03:47,378 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:03:47,379 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:03:47,379 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:03:47,379 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:03:47,379 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:03:47,379 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:03:47,379 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:03:47,380 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:03:47,405 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-25 02:03:47,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 02:03:47,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:47,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:47,416 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:47,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:47,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-25 02:03:47,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:47,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551207682] [2020-09-25 02:03:47,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:47,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:47,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:47,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:03:47,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:47,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 02:03:47,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:03:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:03:47,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:03:47,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:47,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:47,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:47,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:47,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:47,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:03:47,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:47,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:47,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:47,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:47,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:47,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:03:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:47,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:47,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:47,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:47,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:47,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 02:03:47,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:47,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:03:47,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:47,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:03:47,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 02:03:47,886 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 02:03:47,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551207682] [2020-09-25 02:03:47,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:03:47,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:03:47,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412874886] [2020-09-25 02:03:47,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:03:47,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:47,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:03:47,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:03:47,916 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-25 02:03:48,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:48,001 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 02:03:48,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:03:48,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 02:03:48,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:48,017 INFO L225 Difference]: With dead ends: 37 [2020-09-25 02:03:48,017 INFO L226 Difference]: Without dead ends: 22 [2020-09-25 02:03:48,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 02:03:48,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-25 02:03:48,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-25 02:03:48,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-25 02:03:48,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-25 02:03:48,071 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-25 02:03:48,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:48,071 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-25 02:03:48,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:03:48,072 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-25 02:03:48,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 02:03:48,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:48,075 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:48,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:03:48,075 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:48,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:48,076 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-25 02:03:48,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:48,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669654537] [2020-09-25 02:03:48,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:48,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:48,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:03:48,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:48,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 02:03:48,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:48,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:48,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 02:03:48,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:03:48,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:48,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:48,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:48,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:48,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:48,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:03:48,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:48,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:48,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:48,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:03:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:48,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:48,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:48,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:03:48,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:48,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 02:03:48,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:03:48,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:48,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:48,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:48,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:48,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:48,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:48,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 02:03:48,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:48,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:03:48,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:48,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:03:48,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 02:03:48,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669654537] [2020-09-25 02:03:48,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:48,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:03:48,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225928176] [2020-09-25 02:03:48,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:03:48,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:48,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:03:48,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:03:48,612 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-25 02:03:48,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:48,680 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-25 02:03:48,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:03:48,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-25 02:03:48,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:48,683 INFO L225 Difference]: With dead ends: 31 [2020-09-25 02:03:48,683 INFO L226 Difference]: Without dead ends: 26 [2020-09-25 02:03:48,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:03:48,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-25 02:03:48,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-25 02:03:48,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 02:03:48,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-25 02:03:48,692 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-25 02:03:48,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:48,693 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-25 02:03:48,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:03:48,693 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-25 02:03:48,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 02:03:48,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:48,694 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:48,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:03:48,695 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:48,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:48,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-25 02:03:48,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:48,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682623353] [2020-09-25 02:03:48,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:48,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:48,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 02:03:48,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:48,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-25 02:03:48,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:48,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:48,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 02:03:48,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:03:48,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:49,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:49,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:49,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:49,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:49,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:49,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:03:49,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:49,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:49,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:49,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:49,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:49,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:03:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:49,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:49,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:49,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 02:03:49,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:49,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 02:03:49,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:49,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:49,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:49,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 02:03:49,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:49,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:49,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:49,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:03:49,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:49,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 02:03:49,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:49,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:03:49,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:49,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:49,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:49,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:49,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:49,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:49,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:03:49,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:03:49,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:49,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:03:49,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:03:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 02:03:49,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682623353] [2020-09-25 02:03:49,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:49,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:03:49,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813178187] [2020-09-25 02:03:49,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:03:49,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:49,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:03:49,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:03:49,461 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-25 02:03:49,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:49,574 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-25 02:03:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:03:49,580 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-25 02:03:49,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:49,582 INFO L225 Difference]: With dead ends: 35 [2020-09-25 02:03:49,582 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:03:49,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:03:49,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:03:49,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 02:03:49,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 02:03:49,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 02:03:49,589 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-25 02:03:49,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:49,590 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 02:03:49,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:03:49,590 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 02:03:49,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 02:03:49,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:49,592 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:49,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:03:49,592 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:49,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:49,592 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-25 02:03:49,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:49,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071520612] [2020-09-25 02:03:49,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:49,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:49,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:49,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 02:03:49,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:49,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 02:03:49,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:49,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:03:49,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 02:03:49,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:03:49,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:49,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:49,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:49,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:49,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:49,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:03:49,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:49,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:03:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:49,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:50,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:50,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:03:50,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:50,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 02:03:50,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:03:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:50,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:03:50,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:50,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:50,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:50,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:50,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 02:03:50,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:50,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 02:03:50,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:50,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:50,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:50,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 02:03:50,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:50,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:50,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:50,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:50,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:03:50,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:50,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 02:03:50,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:50,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:03:50,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:50,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:50,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:50,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:50,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:50,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:50,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:03:50,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:03:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:50,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:03:50,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:50,379 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 02:03:50,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071520612] [2020-09-25 02:03:50,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:50,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:03:50,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230867118] [2020-09-25 02:03:50,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:03:50,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:50,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:03:50,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:03:50,382 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-25 02:03:50,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:50,512 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 02:03:50,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 02:03:50,512 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-25 02:03:50,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:50,514 INFO L225 Difference]: With dead ends: 39 [2020-09-25 02:03:50,514 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 02:03:50,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:03:50,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 02:03:50,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-25 02:03:50,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 02:03:50,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-25 02:03:50,522 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-25 02:03:50,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:50,522 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-25 02:03:50,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:03:50,523 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-25 02:03:50,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 02:03:50,524 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:50,524 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:50,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:03:50,525 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:50,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:50,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-25 02:03:50,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:50,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867280387] [2020-09-25 02:03:50,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:50,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:50,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:50,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 02:03:50,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:50,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 02:03:50,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:03:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 02:03:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 02:03:50,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:50,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:50,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:50,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:50,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:50,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:50,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:50,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:50,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:50,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:50,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:03:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:50,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:51,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:51,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:03:51,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:51,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 02:03:51,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:03:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:51,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:03:51,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:51,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:51,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:51,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:51,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:03:51,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:51,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 02:03:51,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:03:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:03:51,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:51,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:51,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:51,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:51,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 02:03:51,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:51,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 02:03:51,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:51,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:51,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:51,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 02:03:51,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:51,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:51,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:51,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:51,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:03:51,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:51,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 02:03:51,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:51,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:51,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:51,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:03:51,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:51,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:51,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:51,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:51,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:51,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:51,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:03:51,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:03:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:03:51,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:51,626 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 02:03:51,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867280387] [2020-09-25 02:03:51,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:51,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 02:03:51,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805812074] [2020-09-25 02:03:51,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 02:03:51,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:51,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 02:03:51,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:03:51,629 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-25 02:03:51,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:51,803 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-25 02:03:51,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 02:03:51,804 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-25 02:03:51,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:51,805 INFO L225 Difference]: With dead ends: 43 [2020-09-25 02:03:51,805 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 02:03:51,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:03:51,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 02:03:51,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 02:03:51,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 02:03:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 02:03:51,814 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-25 02:03:51,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:51,814 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 02:03:51,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 02:03:51,815 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 02:03:51,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 02:03:51,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:51,816 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:51,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:03:51,816 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:51,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:51,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-25 02:03:51,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:51,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840252161] [2020-09-25 02:03:51,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:51,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:52,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:52,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 02:03:52,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:52,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-09-25 02:03:52,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:03:52,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 02:03:52,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 02:03:52,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:52,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:52,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:52,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:52,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:52,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:52,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:52,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:52,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:52,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:52,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:52,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:52,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:03:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:52,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:52,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:52,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:03:52,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:52,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-25 02:03:52,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:52,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:03:52,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:52,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:03:52,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:52,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:52,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:52,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:52,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:03:52,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:52,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-25 02:03:52,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:52,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:03:52,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:52,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:03:52,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:52,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:52,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:53,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:53,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:03:53,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:53,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 02:03:53,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:53,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:03:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:03:53,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:53,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:53,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:53,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:53,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 02:03:53,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:53,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 02:03:53,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:53,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:53,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:53,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 02:03:53,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:53,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:53,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:53,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:53,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:03:53,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:53,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 02:03:53,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:53,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:53,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:03:53,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:53,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:53,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:53,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:53,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:53,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:53,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:03:53,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:53,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:03:53,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:53,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:03:53,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:53,358 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 02:03:53,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840252161] [2020-09-25 02:03:53,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:53,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 02:03:53,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577992705] [2020-09-25 02:03:53,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 02:03:53,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:53,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 02:03:53,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:03:53,361 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-25 02:03:53,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:53,573 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-25 02:03:53,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 02:03:53,574 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-25 02:03:53,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:53,575 INFO L225 Difference]: With dead ends: 47 [2020-09-25 02:03:53,575 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 02:03:53,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-25 02:03:53,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 02:03:53,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 02:03:53,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 02:03:53,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-25 02:03:53,583 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-25 02:03:53,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:53,583 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-25 02:03:53,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 02:03:53,583 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-25 02:03:53,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 02:03:53,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:53,585 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:53,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:03:53,585 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:53,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:53,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-25 02:03:53,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:53,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345947810] [2020-09-25 02:03:53,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:53,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:54,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:54,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 02:03:54,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:54,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-09-25 02:03:54,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:54,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:03:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 02:03:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:03:54,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:54,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:54,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:54,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:54,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:54,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:54,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:54,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:54,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:54,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:03:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:54,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:54,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:54,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 02:03:54,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:54,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-09-25 02:03:54,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:03:54,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:54,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 02:03:54,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:54,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:54,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:55,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:55,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:03:55,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:55,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-09-25 02:03:55,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:55,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:03:55,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:03:55,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:55,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:55,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:55,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:55,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:03:55,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:55,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-25 02:03:55,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:55,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:03:55,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:55,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:03:55,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:55,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:55,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:55,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:55,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:03:55,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:55,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 02:03:55,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:03:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:03:55,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:55,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:55,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:55,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:55,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 02:03:55,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:55,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 02:03:55,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 02:03:55,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:55,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:55,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:55,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:55,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:03:55,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:55,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 02:03:55,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:55,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:55,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:55,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:03:55,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:55,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:55,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:55,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:55,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:55,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:55,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:03:55,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:55,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:03:55,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:55,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:03:55,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:55,903 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 02:03:55,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345947810] [2020-09-25 02:03:55,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:55,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 02:03:55,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920304637] [2020-09-25 02:03:55,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 02:03:55,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:55,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 02:03:55,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:03:55,907 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-25 02:03:56,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:56,199 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 02:03:56,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 02:03:56,199 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-25 02:03:56,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:56,201 INFO L225 Difference]: With dead ends: 51 [2020-09-25 02:03:56,201 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:03:56,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-25 02:03:56,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:03:56,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-25 02:03:56,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 02:03:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-25 02:03:56,209 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-25 02:03:56,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:56,209 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-25 02:03:56,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 02:03:56,209 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-25 02:03:56,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 02:03:56,211 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:56,211 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:56,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:03:56,211 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:56,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:56,212 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-25 02:03:56,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:56,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835457129] [2020-09-25 02:03:56,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:56,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:56,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:56,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 02:03:56,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-09-25 02:03:56,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 02:03:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 02:03:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 02:03:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:56,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:56,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:56,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:56,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:56,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:56,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:56,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:56,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:56,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:56,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:56,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:56,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:03:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:56,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:57,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:57,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 02:03:57,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:57,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 620 [2020-09-25 02:03:57,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:57,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:03:57,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:57,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 02:03:57,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:57,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:57,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:58,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:58,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 02:03:58,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:58,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-09-25 02:03:58,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:58,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:03:58,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:58,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 02:03:58,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:58,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:58,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:58,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:58,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:03:58,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:58,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-09-25 02:03:58,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:58,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:03:58,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:58,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:03:58,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:58,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:58,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:58,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:58,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:03:58,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:58,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 02:03:58,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:58,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:03:58,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:58,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:03:58,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:58,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:58,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:58,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:03:58,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:58,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 02:03:58,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:58,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:03:58,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:03:58,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:59,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:59,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:59,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:59,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 02:03:59,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:59,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 02:03:59,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:03:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:59,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 02:03:59,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:59,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:59,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:59,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:59,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:03:59,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:59,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 02:03:59,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:59,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:03:59,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:59,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:03:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:59,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:59,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:59,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:59,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:59,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:03:59,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:03:59,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:59,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:03:59,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:03:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-25 02:03:59,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835457129] [2020-09-25 02:03:59,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:59,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 02:03:59,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135785290] [2020-09-25 02:03:59,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 02:03:59,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:59,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 02:03:59,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-25 02:03:59,466 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-25 02:03:59,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:59,859 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-25 02:03:59,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 02:03:59,860 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-25 02:03:59,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:59,861 INFO L225 Difference]: With dead ends: 55 [2020-09-25 02:03:59,861 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 02:03:59,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-25 02:03:59,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 02:03:59,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 02:03:59,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 02:03:59,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 02:03:59,875 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-25 02:03:59,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:59,875 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 02:03:59,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 02:03:59,876 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 02:03:59,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 02:03:59,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:59,878 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:59,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:03:59,879 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:59,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:59,880 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-25 02:03:59,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:59,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012860538] [2020-09-25 02:03:59,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:59,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:00,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:00,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 02:04:00,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:00,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 821 [2020-09-25 02:04:00,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:00,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 02:04:00,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 02:04:00,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:04:00,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:00,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:00,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:00,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:00,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:00,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:00,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:00,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:00,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:00,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:00,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:00,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:01,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:01,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 02:04:01,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:01,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-09-25 02:04:01,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:01,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:04:01,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:01,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 02:04:01,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:01,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:01,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:02,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:02,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 02:04:02,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:02,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-09-25 02:04:02,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 02:04:02,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:02,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:02,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:02,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:02,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 02:04:02,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:02,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-09-25 02:04:02,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:02,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:02,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:02,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 02:04:02,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:02,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:02,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:02,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:02,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:02,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:02,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-25 02:04:02,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:02,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:02,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:02,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:04:02,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:02,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:02,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:03,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:03,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:04:03,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:03,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 02:04:03,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:03,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:03,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:03,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:03,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:03,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:03,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:03,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:04:03,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:03,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 02:04:03,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:03,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:04:03,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:03,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:03,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:03,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:03,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 02:04:03,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:03,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 02:04:03,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 02:04:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:03,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:03,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:03,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:03,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:04:03,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:03,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 02:04:03,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:03,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:03,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:03,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:04:03,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:03,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:03,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:03,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:03,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:03,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:03,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:04:03,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:04:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:04:03,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:03,634 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 02:04:03,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012860538] [2020-09-25 02:04:03,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:03,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 02:04:03,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239705909] [2020-09-25 02:04:03,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 02:04:03,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:03,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 02:04:03,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-25 02:04:03,644 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-25 02:04:04,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:04,053 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 02:04:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 02:04:04,054 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-25 02:04:04,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:04,055 INFO L225 Difference]: With dead ends: 59 [2020-09-25 02:04:04,055 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 02:04:04,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-25 02:04:04,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 02:04:04,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-25 02:04:04,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 02:04:04,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-25 02:04:04,068 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-25 02:04:04,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:04,068 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-25 02:04:04,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 02:04:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-25 02:04:04,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 02:04:04,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:04,073 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:04,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:04:04,074 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:04,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:04,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-25 02:04:04,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:04,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015379460] [2020-09-25 02:04:04,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:04,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:05,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:05,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 02:04:05,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:05,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-09-25 02:04:05,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:05,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 02:04:05,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 02:04:05,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:05,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:05,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:05,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:05,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:05,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:05,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:05,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:05,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:05,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:05,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:05,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:05,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:05,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:05,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 02:04:05,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:05,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-09-25 02:04:05,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:04:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 02:04:05,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:05,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:05,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:06,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:06,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 02:04:06,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:06,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-09-25 02:04:06,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:06,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:04:06,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:06,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 02:04:06,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:06,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:06,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:07,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:07,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 02:04:07,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:07,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-09-25 02:04:07,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:07,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:07,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:07,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 02:04:07,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:07,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:07,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:07,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:07,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 02:04:07,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:07,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-25 02:04:07,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:07,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:07,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 02:04:07,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:07,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:07,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:07,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:07,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:07,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:07,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 02:04:07,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:07,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:04:07,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:07,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:07,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:08,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:08,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:04:08,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:08,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 02:04:08,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:08,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:08,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:08,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:08,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:08,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:08,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:08,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:08,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:04:08,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:08,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 02:04:08,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:04:08,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:08,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:08,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:08,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:08,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 02:04:08,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:08,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 02:04:08,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:08,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 02:04:08,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:08,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:08,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:08,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:08,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:04:08,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:08,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 02:04:08,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:08,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:04:08,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:08,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:08,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:08,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:08,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:08,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:08,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:04:08,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:08,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:04:08,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:04:08,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 02:04:08,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015379460] [2020-09-25 02:04:08,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:08,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 02:04:08,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220873836] [2020-09-25 02:04:08,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 02:04:08,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:08,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 02:04:08,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-25 02:04:08,552 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-25 02:04:09,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:09,069 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-25 02:04:09,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 02:04:09,070 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-25 02:04:09,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:09,072 INFO L225 Difference]: With dead ends: 63 [2020-09-25 02:04:09,072 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 02:04:09,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 02:04:09,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 02:04:09,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 02:04:09,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 02:04:09,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 02:04:09,080 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-25 02:04:09,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:09,081 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 02:04:09,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 02:04:09,081 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 02:04:09,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 02:04:09,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:09,083 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:09,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 02:04:09,083 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:09,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:09,083 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-25 02:04:09,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:09,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206941296] [2020-09-25 02:04:09,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:09,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:10,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:10,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 02:04:10,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:10,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1048 [2020-09-25 02:04:10,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:10,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 02:04:10,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 02:04:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 02:04:10,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:10,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:10,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:10,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:10,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:10,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:10,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:10,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:10,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:10,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:10,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:10,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:10,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:10,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:11,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:11,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 02:04:11,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:11,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 920 [2020-09-25 02:04:11,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 02:04:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 02:04:11,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:11,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:11,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:11,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:11,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 02:04:11,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:11,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 716 [2020-09-25 02:04:11,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:11,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:04:11,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:11,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 02:04:11,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:11,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:12,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:12,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:12,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 02:04:12,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:12,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-09-25 02:04:12,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:12,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:04:12,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:12,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 02:04:12,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:12,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:12,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:13,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:13,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 02:04:13,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:13,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-09-25 02:04:13,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 02:04:13,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:13,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:13,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:13,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:13,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 02:04:13,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:13,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-09-25 02:04:13,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 02:04:13,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:13,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:13,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:13,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:13,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:13,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:13,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 02:04:13,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:13,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:13,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:04:13,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:13,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:13,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:13,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:13,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:04:13,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:13,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 02:04:13,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:13,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:13,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:13,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:13,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:13,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:13,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:14,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:14,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:04:14,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:14,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 02:04:14,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:14,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:14,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:14,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:04:14,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:14,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:14,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:14,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:14,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 02:04:14,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:14,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 02:04:14,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 02:04:14,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:14,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:14,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:14,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:14,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:04:14,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:14,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 02:04:14,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:14,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:14,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:14,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:04:14,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:14,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:14,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:14,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:14,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:14,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:14,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:04:14,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:04:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:04:14,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-25 02:04:14,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206941296] [2020-09-25 02:04:14,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:14,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 02:04:14,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964194991] [2020-09-25 02:04:14,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 02:04:14,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:14,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 02:04:14,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-25 02:04:14,409 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-25 02:04:15,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:15,104 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-25 02:04:15,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 02:04:15,105 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-25 02:04:15,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:15,106 INFO L225 Difference]: With dead ends: 67 [2020-09-25 02:04:15,106 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 02:04:15,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 02:04:15,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 02:04:15,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-25 02:04:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 02:04:15,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-25 02:04:15,113 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-25 02:04:15,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:15,114 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-25 02:04:15,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 02:04:15,114 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-25 02:04:15,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-25 02:04:15,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:15,115 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:15,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 02:04:15,115 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:15,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:15,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-25 02:04:15,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:15,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828244974] [2020-09-25 02:04:15,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:15,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:16,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:16,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 02:04:16,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:16,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-09-25 02:04:16,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 02:04:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 02:04:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 02:04:16,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:16,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:16,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:16,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:16,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:16,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:16,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:16,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:16,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:16,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:16,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:16,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:16,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:17,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:17,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 02:04:17,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:17,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-09-25 02:04:17,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 02:04:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:17,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 02:04:17,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:17,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:17,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:17,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:17,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 02:04:17,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:17,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-09-25 02:04:17,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 02:04:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 02:04:17,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:17,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:17,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:18,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:18,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 02:04:18,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:18,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-09-25 02:04:18,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:18,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:04:18,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:18,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 02:04:18,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:18,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:18,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:19,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:19,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 02:04:19,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:19,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-25 02:04:19,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:19,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:04:19,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:19,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 02:04:19,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:19,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:19,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:19,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:19,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 02:04:19,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:19,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-09-25 02:04:19,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 02:04:19,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:19,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:19,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:19,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 02:04:19,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:19,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-25 02:04:19,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 02:04:19,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:19,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:19,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:20,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:20,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:20,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:20,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 02:04:20,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:20,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:20,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:20,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:04:20,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:20,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:20,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:20,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:20,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:04:20,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:20,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 02:04:20,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:20,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:20,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:20,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:20,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:20,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:20,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:20,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:20,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:04:20,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:20,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 02:04:20,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:20,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:20,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:20,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:04:20,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:20,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:20,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:20,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:20,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 02:04:20,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:20,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 02:04:20,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:20,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:20,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:20,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 02:04:20,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:20,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:20,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:20,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:20,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:04:20,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:20,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 02:04:20,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:20,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:20,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:20,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:04:20,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:20,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:20,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:20,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:20,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:20,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:20,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:04:20,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:20,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:04:20,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:20,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:04:20,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-25 02:04:20,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828244974] [2020-09-25 02:04:20,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:20,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 02:04:20,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157259441] [2020-09-25 02:04:20,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 02:04:20,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:20,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 02:04:20,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-25 02:04:20,923 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-25 02:04:21,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:21,722 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 02:04:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-25 02:04:21,723 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-25 02:04:21,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:21,724 INFO L225 Difference]: With dead ends: 71 [2020-09-25 02:04:21,725 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 02:04:21,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 02:04:21,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 02:04:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-25 02:04:21,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 02:04:21,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-25 02:04:21,736 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-25 02:04:21,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:21,737 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-25 02:04:21,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 02:04:21,737 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-25 02:04:21,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 02:04:21,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:21,738 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:21,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 02:04:21,738 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:21,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:21,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-25 02:04:21,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:21,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502863549] [2020-09-25 02:04:21,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:21,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:22,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:22,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 02:04:22,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:22,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1235 [2020-09-25 02:04:22,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 02:04:22,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 02:04:22,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 02:04:22,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:23,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:23,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:23,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:23,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:23,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:23,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:23,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:23,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:23,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:23,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:24,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:24,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 02:04:24,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:24,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1066 [2020-09-25 02:04:24,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 02:04:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 02:04:24,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:24,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:25,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:25,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 02:04:25,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:25,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1236 [2020-09-25 02:04:25,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:25,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 02:04:25,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:25,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 02:04:25,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:25,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:25,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:26,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:26,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 02:04:26,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:26,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 784 [2020-09-25 02:04:26,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:26,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 02:04:26,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:26,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 02:04:26,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:26,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:26,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:26,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:26,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 02:04:26,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:26,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 647 [2020-09-25 02:04:26,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:26,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:04:26,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:26,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 02:04:26,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:27,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:27,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:27,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:27,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 02:04:27,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:27,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-09-25 02:04:27,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:27,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:04:27,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:27,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 02:04:27,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:27,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:27,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:28,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:28,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 02:04:28,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:28,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-25 02:04:28,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:28,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 02:04:28,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:28,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:28,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:28,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:28,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 02:04:28,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:28,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-09-25 02:04:28,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:28,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:28,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:28,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 02:04:28,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:28,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:28,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:28,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:28,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:28,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:28,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 02:04:28,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:28,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:04:28,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:28,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:28,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:28,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:28,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:04:28,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:28,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 02:04:28,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:28,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:28,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:28,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:28,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:29,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:29,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:04:29,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:29,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 02:04:29,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:04:29,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:29,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:29,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:29,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:29,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 02:04:29,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:29,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 02:04:29,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 02:04:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:29,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:29,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:29,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:29,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:04:29,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:29,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 02:04:29,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:29,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:29,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:29,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:04:29,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:29,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:29,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:29,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:29,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:29,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:29,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:04:29,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:29,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:04:29,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:29,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:04:29,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-25 02:04:29,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502863549] [2020-09-25 02:04:29,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:29,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-25 02:04:29,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978164734] [2020-09-25 02:04:29,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-25 02:04:29,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:29,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-25 02:04:29,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-25 02:04:29,508 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-25 02:04:30,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:30,469 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-25 02:04:30,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-25 02:04:30,469 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-25 02:04:30,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:30,470 INFO L225 Difference]: With dead ends: 75 [2020-09-25 02:04:30,470 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 02:04:30,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 02:04:30,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 02:04:30,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 02:04:30,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 02:04:30,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 02:04:30,478 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-25 02:04:30,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:30,479 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 02:04:30,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-25 02:04:30,479 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 02:04:30,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 02:04:30,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:30,480 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:30,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 02:04:30,480 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:30,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:30,481 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-25 02:04:30,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:30,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894448581] [2020-09-25 02:04:30,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:30,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:31,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:31,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 02:04:31,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:31,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1485 [2020-09-25 02:04:31,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 02:04:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 02:04:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:04:31,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:32,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:32,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:32,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:32,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:04:32,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:32,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:04:32,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:32,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:32,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:32,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:32,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:32,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:32,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:33,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:33,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 02:04:33,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:33,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1370 [2020-09-25 02:04:33,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-25 02:04:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 02:04:33,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:33,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:33,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:34,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:34,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 02:04:34,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:34,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1136 [2020-09-25 02:04:34,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:34,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 02:04:34,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:34,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 02:04:34,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:34,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:34,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:35,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:35,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 02:04:35,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:35,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 922 [2020-09-25 02:04:35,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:35,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 02:04:35,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:35,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 02:04:35,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:35,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:35,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:36,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:36,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 02:04:36,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:36,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 750 [2020-09-25 02:04:36,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:36,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 02:04:36,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:36,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 02:04:36,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:36,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:36,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:37,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:37,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 02:04:37,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:37,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-09-25 02:04:37,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 02:04:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 02:04:37,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:37,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:37,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:37,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:37,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 02:04:37,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:37,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-09-25 02:04:37,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:37,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:04:37,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:37,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 02:04:37,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:37,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:37,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:38,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:38,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 02:04:38,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:38,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-09-25 02:04:38,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 02:04:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 02:04:38,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:38,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:38,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:38,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:38,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 02:04:38,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:38,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-25 02:04:38,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:04:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 02:04:38,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:38,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:38,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:38,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:38,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 02:04:38,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:38,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-25 02:04:38,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:38,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:04:38,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:38,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:04:38,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:38,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:38,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:38,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:38,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:04:38,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:38,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 02:04:38,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:04:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 02:04:38,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:39,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:39,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:39,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:39,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 02:04:39,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:39,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 02:04:39,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:39,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:04:39,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:39,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:04:39,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:39,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:39,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:39,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:39,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 02:04:39,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:39,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 02:04:39,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 02:04:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:39,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:39,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:39,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:39,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:04:39,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:39,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 02:04:39,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:39,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:04:39,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:39,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:04:39,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:39,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:04:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:39,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:39,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:39,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:39,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:39,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:04:39,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:04:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:04:39,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-25 02:04:39,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894448581] [2020-09-25 02:04:39,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:39,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-25 02:04:39,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094302630] [2020-09-25 02:04:39,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-25 02:04:39,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:39,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-25 02:04:39,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-25 02:04:39,603 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states.