/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_15x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:37:51,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:37:51,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:37:51,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:37:51,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:37:51,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:37:51,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:37:51,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:37:51,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:37:51,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:37:51,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:37:51,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:37:51,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:37:51,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:37:51,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:37:51,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:37:51,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:37:51,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:37:51,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:37:51,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:37:51,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:37:51,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:37:51,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:37:51,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:37:51,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:37:51,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:37:51,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:37:51,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:37:51,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:37:51,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:37:51,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:37:52,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:37:52,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:37:52,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:37:52,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:37:52,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:37:52,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:37:52,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:37:52,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:37:52,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:37:52,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:37:52,011 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 06:37:52,065 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:37:52,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:37:52,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:37:52,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:37:52,069 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:37:52,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:37:52,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:37:52,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:37:52,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:37:52,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:37:52,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:37:52,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:37:52,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:37:52,071 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:37:52,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:37:52,075 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:37:52,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:37:52,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:37:52,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:37:52,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:37:52,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:37:52,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:37:52,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:37:52,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:37:52,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:37:52,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:37:52,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:37:52,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:37:52,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:37:52,079 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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:37:52,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:37:52,542 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:37:52,549 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:37:52,552 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:37:52,553 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:37:52,555 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_15x0-1.c [2020-09-25 06:37:52,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79acbe90d/c51af300c2f94a699a78f35ab5ab1ad9/FLAGd4ed4d713 [2020-09-25 06:37:53,179 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:37:53,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_15x0-1.c [2020-09-25 06:37:53,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79acbe90d/c51af300c2f94a699a78f35ab5ab1ad9/FLAGd4ed4d713 [2020-09-25 06:37:53,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79acbe90d/c51af300c2f94a699a78f35ab5ab1ad9 [2020-09-25 06:37:53,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:37:53,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:37:53,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:37:53,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:37:53,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:37:53,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:37:53" (1/1) ... [2020-09-25 06:37:53,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b110e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:53, skipping insertion in model container [2020-09-25 06:37:53,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:37:53" (1/1) ... [2020-09-25 06:37:53,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:37:53,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:37:53,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:37:53,840 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:37:53,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:37:53,877 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:37:53,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:53 WrapperNode [2020-09-25 06:37:53,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:37:53,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:37:53,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:37:53,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:37:53,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:53" (1/1) ... [2020-09-25 06:37:53,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:53" (1/1) ... [2020-09-25 06:37:53,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:53" (1/1) ... [2020-09-25 06:37:53,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:53" (1/1) ... [2020-09-25 06:37:53,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:53" (1/1) ... [2020-09-25 06:37:53,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:53" (1/1) ... [2020-09-25 06:37:53,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:53" (1/1) ... [2020-09-25 06:37:53,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:37:53,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:37:53,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:37:53,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:37:53,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:53" (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 06:37:54,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:37:54,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:37:54,074 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-25 06:37:54,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:37:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:37:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-25 06:37:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:37:54,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:37:54,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:37:54,288 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:37:54,289 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:37:54,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:37:54 BoogieIcfgContainer [2020-09-25 06:37:54,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:37:54,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:37:54,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:37:54,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:37:54,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:37:53" (1/3) ... [2020-09-25 06:37:54,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1274a6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:37:54, skipping insertion in model container [2020-09-25 06:37:54,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:53" (2/3) ... [2020-09-25 06:37:54,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1274a6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:37:54, skipping insertion in model container [2020-09-25 06:37:54,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:37:54" (3/3) ... [2020-09-25 06:37:54,325 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_15x0-1.c [2020-09-25 06:37:54,340 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:37:54,351 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:37:54,388 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:37:54,418 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:37:54,418 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:37:54,418 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:37:54,418 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:37:54,419 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:37:54,419 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:37:54,419 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:37:54,419 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:37:54,440 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 06:37:54,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 06:37:54,448 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:54,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:54,449 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:54,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:54,457 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-25 06:37:54,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:54,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192452852] [2020-09-25 06:37:54,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:54,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:54,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:54,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:54,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:37:54,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:54,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-09-25 06:37:54,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:54,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:37:54,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:54,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:37:54,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 06:37:55,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:55,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:55,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:55,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:55,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:55,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:37:55,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:55,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:55,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:55,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:37:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:55,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:55,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:55,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:55,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:55,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:37:55,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:55,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:55,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:37:55,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:55,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:37:55,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:55,167 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 06:37:55,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192452852] [2020-09-25 06:37:55,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:37:55,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:37:55,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055692977] [2020-09-25 06:37:55,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:37:55,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:55,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:37:55,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:37:55,202 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-25 06:37:55,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:55,304 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-25 06:37:55,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:37:55,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 06:37:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:55,321 INFO L225 Difference]: With dead ends: 39 [2020-09-25 06:37:55,322 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 06:37:55,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:37:55,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 06:37:55,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-25 06:37:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 06:37:55,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-25 06:37:55,386 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-25 06:37:55,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:55,386 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-25 06:37:55,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:37:55,387 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-25 06:37:55,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 06:37:55,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:55,390 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:55,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:37:55,391 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:55,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:55,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-25 06:37:55,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:55,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236888449] [2020-09-25 06:37:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:55,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:55,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:55,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:55,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 06:37:55,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:55,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-09-25 06:37:55,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:55,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:55,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:37:55,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:55,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:37:55,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:55,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:55,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:55,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:55,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:55,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:55,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:37:55,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:55,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:55,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:55,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:55,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:55,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:55,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:37:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:55,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:55,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:55,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:37:55,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:55,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 06:37:55,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:55,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:37:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:55,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:37:55,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:56,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:56,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:56,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:56,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:56,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:56,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 06:37:56,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:56,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:56,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:56,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:56,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:37:56,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 06:37:56,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236888449] [2020-09-25 06:37:56,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:56,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:37:56,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695814762] [2020-09-25 06:37:56,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:37:56,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:56,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:37:56,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:37:56,117 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 6 states. [2020-09-25 06:37:56,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:56,207 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-25 06:37:56,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:37:56,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 06:37:56,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:56,210 INFO L225 Difference]: With dead ends: 36 [2020-09-25 06:37:56,210 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 06:37:56,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:37:56,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 06:37:56,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 06:37:56,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 06:37:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 06:37:56,228 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-25 06:37:56,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:56,229 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 06:37:56,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:37:56,230 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 06:37:56,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 06:37:56,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:56,234 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:56,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:37:56,235 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:56,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:56,236 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-25 06:37:56,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:56,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124096728] [2020-09-25 06:37:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:56,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:56,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:56,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:56,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 06:37:56,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:56,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-09-25 06:37:56,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:56,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:56,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:37:56,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:56,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:37:56,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:56,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:56,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:56,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:56,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:56,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:37:56,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:56,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:56,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:37:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:56,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:56,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:56,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:37:56,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:56,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 06:37:56,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:56,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:56,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:37:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:37:56,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:57,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:57,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:57,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:57,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:37:57,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:57,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 06:37:57,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:57,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:57,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:37:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:37:57,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:37:57,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:57,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:57,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:57,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:57,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:57,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:37:57,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:57,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:57,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:57,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:57,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:37:57,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 06:37:57,173 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 06:37:57,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124096728] [2020-09-25 06:37:57,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:57,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:37:57,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489154998] [2020-09-25 06:37:57,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:37:57,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:57,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:37:57,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:37:57,179 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2020-09-25 06:37:57,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:57,265 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-09-25 06:37:57,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:37:57,266 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-25 06:37:57,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:57,267 INFO L225 Difference]: With dead ends: 41 [2020-09-25 06:37:57,268 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 06:37:57,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:37:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 06:37:57,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-25 06:37:57,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 06:37:57,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-25 06:37:57,277 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-09-25 06:37:57,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:57,277 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-25 06:37:57,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:37:57,278 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-25 06:37:57,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 06:37:57,279 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:57,279 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:57,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:37:57,280 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:57,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:57,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-09-25 06:37:57,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:57,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88958567] [2020-09-25 06:37:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:57,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:57,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:58,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:58,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 06:37:58,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:58,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 829 [2020-09-25 06:37:58,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:58,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:58,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:37:58,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:58,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:37:58,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:58,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:58,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:58,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:58,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:58,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:58,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:58,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:58,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:58,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:58,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:58,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:37:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:58,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:58,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:58,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:37:58,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:58,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 06:37:58,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:58,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:58,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:37:58,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:58,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 06:37:58,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:58,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:58,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:58,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:58,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:37:58,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:58,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 06:37:58,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:58,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:37:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:37:58,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:58,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:58,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:58,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:58,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:37:58,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:58,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 06:37:58,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:58,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:37:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:37:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:58,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:58,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:58,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:58,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:58,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:37:58,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:58,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:37:58,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:58,650 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 06:37:58,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88958567] [2020-09-25 06:37:58,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:58,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:37:58,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986623792] [2020-09-25 06:37:58,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:37:58,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:58,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:37:58,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:37:58,653 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states. [2020-09-25 06:37:58,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:58,745 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-25 06:37:58,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:37:58,745 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 06:37:58,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:58,747 INFO L225 Difference]: With dead ends: 46 [2020-09-25 06:37:58,747 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 06:37:58,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:37:58,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 06:37:58,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 06:37:58,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 06:37:58,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-25 06:37:58,755 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-09-25 06:37:58,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:58,756 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-25 06:37:58,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:37:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-25 06:37:58,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 06:37:58,758 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:58,758 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:58,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:37:58,758 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:58,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:58,759 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-09-25 06:37:58,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:58,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873742071] [2020-09-25 06:37:58,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:58,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:58,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:59,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:59,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 06:37:59,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1158 [2020-09-25 06:37:59,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:59,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:37:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:37:59,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:59,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:59,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:59,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:59,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:59,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:59,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:59,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:59,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:59,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:59,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:59,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:59,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:59,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:37:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:59,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:00,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:00,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:00,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:00,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 06:38:00,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:00,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:00,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:38:00,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:00,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 06:38:00,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:00,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:00,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:00,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:00,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:00,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 06:38:00,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:00,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:00,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:00,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:00,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:00,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:00,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:00,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:00,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:00,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:00,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:00,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 06:38:00,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:00,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:00,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:00,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:00,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:00,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:00,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:00,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:00,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:00,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 06:38:00,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:00,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:00,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:00,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:00,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:00,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:00,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:00,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:00,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:38:00,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:00,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:00,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:00,692 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 06:38:00,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873742071] [2020-09-25 06:38:00,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:00,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:38:00,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205370124] [2020-09-25 06:38:00,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:38:00,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:00,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:38:00,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:38:00,695 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 9 states. [2020-09-25 06:38:00,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:00,835 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 06:38:00,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:38:00,836 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-09-25 06:38:00,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:00,838 INFO L225 Difference]: With dead ends: 51 [2020-09-25 06:38:00,841 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 06:38:00,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:38:00,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 06:38:00,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 06:38:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 06:38:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-25 06:38:00,859 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-09-25 06:38:00,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:00,860 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-25 06:38:00,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:38:00,861 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-25 06:38:00,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 06:38:00,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:00,863 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:00,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:38:00,863 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:00,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:00,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-09-25 06:38:00,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:00,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818240890] [2020-09-25 06:38:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:00,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:01,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:02,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:02,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 06:38:02,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:02,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1714 [2020-09-25 06:38:02,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:02,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:02,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:38:02,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:02,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 06:38:02,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:02,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:02,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:02,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:02,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:02,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:02,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:38:02,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:02,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:02,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:02,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:02,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:02,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:02,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:02,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:02,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:02,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-09-25 06:38:02,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:02,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:02,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:38:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 06:38:02,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:03,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:03,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:03,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:03,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:03,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:03,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-25 06:38:03,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:03,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:03,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:03,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:03,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:03,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:03,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:03,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:03,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:03,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:03,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 06:38:03,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:03,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:03,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:03,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:03,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:03,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:03,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:03,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 06:38:03,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:03,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:03,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:03,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:03,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:03,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:03,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:03,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:03,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 06:38:03,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:03,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:03,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:03,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:03,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:03,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:03,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:03,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:03,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:38:03,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:03,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:03,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:03,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:03,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:03,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-09-25 06:38:03,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818240890] [2020-09-25 06:38:03,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:03,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:38:03,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85043091] [2020-09-25 06:38:03,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:38:03,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:03,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:38:03,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:38:03,771 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 11 states. [2020-09-25 06:38:03,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:03,906 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-09-25 06:38:03,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:38:03,907 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-25 06:38:03,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:03,908 INFO L225 Difference]: With dead ends: 56 [2020-09-25 06:38:03,908 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 06:38:03,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:38:03,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 06:38:03,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 06:38:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 06:38:03,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 06:38:03,922 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-09-25 06:38:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:03,925 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 06:38:03,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:38:03,926 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 06:38:03,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 06:38:03,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:03,929 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:03,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:38:03,930 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:03,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:03,931 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-09-25 06:38:03,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:03,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658259470] [2020-09-25 06:38:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:03,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:04,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:05,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:05,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-25 06:38:05,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:05,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1859 [2020-09-25 06:38:05,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:05,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:05,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 06:38:05,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:05,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 06:38:05,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:05,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:05,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:05,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:05,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:05,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:05,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:38:05,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:05,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:05,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:05,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:05,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:05,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:05,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:05,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:06,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:06,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:38:06,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:06,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-09-25 06:38:06,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:06,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 06:38:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 06:38:06,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:06,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:06,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:06,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:06,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:06,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:06,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-25 06:38:06,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:06,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:06,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:38:06,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:06,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:38:06,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:06,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:06,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:06,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:06,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:06,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:06,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 06:38:06,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:06,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:06,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:06,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:06,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:06,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:06,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:06,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:06,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 06:38:06,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:06,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:06,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:06,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:07,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:07,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:07,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:07,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:07,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:07,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 06:38:07,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:07,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:07,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:07,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:07,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:07,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:07,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:07,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:07,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:07,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:07,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 06:38:07,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:07,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:07,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:07,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:07,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:07,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:07,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:07,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:07,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:07,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:07,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:07,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:38:07,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:07,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:07,257 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 21 proven. 94 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 06:38:07,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658259470] [2020-09-25 06:38:07,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:07,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:38:07,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237605824] [2020-09-25 06:38:07,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:38:07,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:07,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:38:07,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:38:07,260 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 12 states. [2020-09-25 06:38:07,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:07,395 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-25 06:38:07,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:38:07,395 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-25 06:38:07,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:07,397 INFO L225 Difference]: With dead ends: 61 [2020-09-25 06:38:07,397 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 06:38:07,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:38:07,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 06:38:07,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 06:38:07,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 06:38:07,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-09-25 06:38:07,406 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-09-25 06:38:07,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:07,407 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-09-25 06:38:07,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:38:07,407 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-09-25 06:38:07,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 06:38:07,408 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:07,408 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:07,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:38:07,409 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:07,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:07,409 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-09-25 06:38:07,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:07,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92461407] [2020-09-25 06:38:07,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:07,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:07,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:09,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:09,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 06:38:09,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:09,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1947 [2020-09-25 06:38:09,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:09,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:09,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 06:38:09,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:09,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:38:09,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:09,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:09,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:09,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:09,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:09,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:09,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:38:09,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:09,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:09,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:09,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:09,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:09,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:09,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:09,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:09,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:09,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:38:09,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:09,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-09-25 06:38:09,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:09,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:09,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 06:38:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:09,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 06:38:09,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:09,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:09,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:10,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:10,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:38:10,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:10,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-09-25 06:38:10,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:10,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:38:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:38:10,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:10,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:10,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:10,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:10,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:10,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:10,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-25 06:38:10,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:10,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:38:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:38:10,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:10,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:10,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:10,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:10,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:10,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:10,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 06:38:10,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:10,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:10,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:10,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:10,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:10,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:10,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:10,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:11,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:11,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:11,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:11,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 06:38:11,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:11,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:11,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:11,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:11,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:11,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:11,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:11,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:11,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:11,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:11,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:11,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 06:38:11,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:11,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:11,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:11,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:11,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:11,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:11,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:11,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:11,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 06:38:11,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:11,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:11,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:11,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:11,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:11,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:11,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:11,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:11,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:38:11,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:11,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:11,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:11,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 24 proven. 137 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-25 06:38:11,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92461407] [2020-09-25 06:38:11,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:11,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 06:38:11,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718026335] [2020-09-25 06:38:11,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 06:38:11,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:11,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 06:38:11,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:38:11,376 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 13 states. [2020-09-25 06:38:11,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:11,533 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-09-25 06:38:11,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:38:11,534 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-09-25 06:38:11,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:11,535 INFO L225 Difference]: With dead ends: 66 [2020-09-25 06:38:11,535 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 06:38:11,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-25 06:38:11,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 06:38:11,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 06:38:11,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 06:38:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 06:38:11,548 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-09-25 06:38:11,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:11,549 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 06:38:11,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 06:38:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 06:38:11,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 06:38:11,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:11,552 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:11,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:38:11,553 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:11,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:11,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-09-25 06:38:11,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:11,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152982609] [2020-09-25 06:38:11,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:11,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:11,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:14,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:14,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 06:38:14,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:14,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3340 [2020-09-25 06:38:14,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:14,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 06:38:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 06:38:14,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:14,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:14,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:14,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:14,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:14,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:14,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:38:14,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:14,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:14,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:14,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:14,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:14,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:14,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:14,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:15,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:15,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 06:38:15,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:15,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-09-25 06:38:15,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:15,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:15,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 06:38:15,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:15,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 06:38:15,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:15,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:15,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:16,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:16,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:38:16,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:16,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-09-25 06:38:16,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:16,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:16,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 06:38:16,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:16,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:38:16,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:16,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:16,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:16,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:16,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:38:16,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:16,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-25 06:38:16,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:16,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:16,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:38:16,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:16,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:38:16,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:16,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:16,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:16,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:16,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:16,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:16,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-25 06:38:16,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:16,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:16,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:38:16,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:16,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:38:16,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:16,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:16,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:17,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:17,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:17,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:17,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 06:38:17,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:17,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:17,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:17,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:17,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:17,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:17,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:17,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:17,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 06:38:17,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:17,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:17,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:17,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:17,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:17,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:17,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:17,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:17,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:17,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:17,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:17,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 06:38:17,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:17,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:17,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:17,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:17,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:17,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:17,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:17,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:17,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:17,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:17,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:17,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 06:38:17,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:17,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:17,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:17,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:17,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:17,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:17,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:17,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:17,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:38:17,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:17,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:17,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:17,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 30 proven. 177 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-25 06:38:17,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152982609] [2020-09-25 06:38:17,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:17,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 06:38:17,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829647226] [2020-09-25 06:38:17,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 06:38:17,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:17,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 06:38:17,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:38:17,437 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 14 states. [2020-09-25 06:38:17,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:17,572 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 06:38:17,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:38:17,573 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 90 [2020-09-25 06:38:17,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:17,574 INFO L225 Difference]: With dead ends: 71 [2020-09-25 06:38:17,574 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 06:38:17,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-09-25 06:38:17,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 06:38:17,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 06:38:17,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 06:38:17,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-09-25 06:38:17,587 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-09-25 06:38:17,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:17,588 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-09-25 06:38:17,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 06:38:17,588 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-09-25 06:38:17,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 06:38:17,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:17,593 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:17,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:38:17,594 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:17,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:17,594 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-09-25 06:38:17,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:17,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309812355] [2020-09-25 06:38:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:17,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:18,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:19,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:19,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 06:38:19,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:19,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2147 [2020-09-25 06:38:19,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:19,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 06:38:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 06:38:19,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:19,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:19,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:19,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:19,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:19,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:19,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:38:19,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:19,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:19,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:19,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:19,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:19,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:19,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:20,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:20,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 06:38:20,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:20,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-09-25 06:38:20,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:20,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:20,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 06:38:20,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:20,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 06:38:20,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:20,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:20,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:20,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:20,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 06:38:20,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:20,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-09-25 06:38:20,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:20,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 06:38:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 06:38:20,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:20,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:20,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:21,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:21,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:38:21,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:21,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-09-25 06:38:21,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:21,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 06:38:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:38:21,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:21,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:21,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:21,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:21,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:38:21,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:21,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-09-25 06:38:21,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:21,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:21,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:38:21,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:21,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:38:21,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:21,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:21,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:21,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:21,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:21,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:21,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 06:38:21,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:21,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:21,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:38:21,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:21,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:38:21,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:21,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:21,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:22,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:22,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:22,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:22,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 06:38:22,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:22,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:22,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:22,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:22,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:22,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:22,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:22,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:22,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 06:38:22,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:22,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:22,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:22,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:22,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:22,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:22,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:22,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:22,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 06:38:22,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:22,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:22,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:22,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:22,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:22,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:22,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:22,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:22,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:22,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:22,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:22,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 06:38:22,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:22,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:22,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:22,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:22,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:22,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:22,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:22,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:22,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:22,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:22,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:22,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:38:22,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:22,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:22,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:22,564 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 24 proven. 244 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-09-25 06:38:22,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309812355] [2020-09-25 06:38:22,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:22,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 06:38:22,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542799301] [2020-09-25 06:38:22,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 06:38:22,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:22,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 06:38:22,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:38:22,567 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 15 states. [2020-09-25 06:38:22,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:22,714 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-09-25 06:38:22,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:38:22,715 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 99 [2020-09-25 06:38:22,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:22,716 INFO L225 Difference]: With dead ends: 76 [2020-09-25 06:38:22,716 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 06:38:22,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-25 06:38:22,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 06:38:22,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 06:38:22,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 06:38:22,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 06:38:22,724 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 99 [2020-09-25 06:38:22,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:22,724 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 06:38:22,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 06:38:22,724 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 06:38:22,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 06:38:22,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:22,726 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:22,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 06:38:22,726 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:22,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:22,726 INFO L82 PathProgramCache]: Analyzing trace with hash -276966773, now seen corresponding path program 10 times [2020-09-25 06:38:22,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:22,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506634986] [2020-09-25 06:38:22,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:22,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:23,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:25,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:25,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 06:38:25,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:25,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3124 [2020-09-25 06:38:25,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:25,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:25,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 06:38:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 06:38:25,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:25,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:25,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:25,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:25,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:25,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:25,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:38:25,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:25,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:25,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:25,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:25,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:25,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:25,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:25,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:26,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:26,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 06:38:26,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:26,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-09-25 06:38:26,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:26,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:26,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 06:38:26,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:26,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 06:38:26,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:26,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:26,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:27,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:27,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 06:38:27,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:27,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-09-25 06:38:27,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:27,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 06:38:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 06:38:27,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:27,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:27,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:27,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:27,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 06:38:27,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:27,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-25 06:38:27,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:27,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 06:38:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 06:38:27,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:27,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:27,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:28,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:28,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:38:28,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:28,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-09-25 06:38:28,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:28,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:28,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 06:38:28,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:28,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:38:28,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:28,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:28,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:28,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:28,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:38:28,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:28,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-09-25 06:38:28,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:28,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:28,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:38:28,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:28,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:38:28,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:28,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:28,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:28,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:28,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:28,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:28,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 06:38:28,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:28,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:38:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:38:28,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:28,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:28,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:29,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:29,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:29,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:29,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 06:38:29,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:29,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:29,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:29,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:29,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:29,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:29,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:29,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:29,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:29,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:29,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:29,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 06:38:29,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:29,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:29,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:29,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:29,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:29,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:29,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:29,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:29,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:29,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:29,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:29,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 06:38:29,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:29,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:29,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:29,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:29,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:29,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:29,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:29,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:29,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 06:38:29,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:29,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:29,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:29,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:29,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:29,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:29,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:29,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:29,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:29,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:29,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:29,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:38:29,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:29,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:29,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:29,497 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 18 proven. 296 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-09-25 06:38:29,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506634986] [2020-09-25 06:38:29,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:29,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 06:38:29,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199401873] [2020-09-25 06:38:29,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 06:38:29,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:29,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 06:38:29,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:38:29,500 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 16 states. [2020-09-25 06:38:29,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:29,716 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-09-25 06:38:29,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:38:29,717 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-09-25 06:38:29,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:29,719 INFO L225 Difference]: With dead ends: 81 [2020-09-25 06:38:29,719 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 06:38:29,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-09-25 06:38:29,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 06:38:29,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-09-25 06:38:29,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 06:38:29,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-09-25 06:38:29,741 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 108 [2020-09-25 06:38:29,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:29,742 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-09-25 06:38:29,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 06:38:29,742 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-09-25 06:38:29,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 06:38:29,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:29,743 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:29,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 06:38:29,744 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:29,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:29,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1749540651, now seen corresponding path program 11 times [2020-09-25 06:38:29,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:29,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647900490] [2020-09-25 06:38:29,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:29,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:30,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:33,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:33,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 06:38:33,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:33,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4160 [2020-09-25 06:38:33,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:33,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 06:38:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:33,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 06:38:33,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:33,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:33,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:33,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:33,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:33,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:33,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:38:33,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:33,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:33,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:33,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:33,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:34,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:34,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 06:38:34,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:34,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 830 [2020-09-25 06:38:34,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:34,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:34,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 06:38:34,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:34,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 06:38:34,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:34,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:34,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:35,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:35,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 06:38:35,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:35,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-09-25 06:38:35,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:35,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:35,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 06:38:35,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:35,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 06:38:35,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:35,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:35,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:36,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:36,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 06:38:36,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:36,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-09-25 06:38:36,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:36,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 06:38:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 06:38:36,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:36,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:36,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:36,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:36,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 06:38:36,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:36,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-09-25 06:38:36,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:36,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:36,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 06:38:36,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:36,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 06:38:36,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:36,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:36,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:37,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:37,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:38:37,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:37,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-25 06:38:37,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:37,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 06:38:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:38:37,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:37,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:37,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:37,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:37,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:38:37,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:37,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-25 06:38:37,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:37,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:38:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:38:37,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:37,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:37,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:37,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:37,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:37,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:37,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 06:38:37,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:37,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:38:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:38:37,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:37,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:37,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:37,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:37,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:37,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:37,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 06:38:37,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:37,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:37,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:37,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:37,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:37,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:37,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:37,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:38,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:38,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:38,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:38,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 06:38:38,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:38,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:38,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:38,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:38,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:38,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:38,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:38,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:38,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:38,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:38,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:38,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 06:38:38,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:38,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:38,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:38,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:38,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:38,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:38,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:38,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:38,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 06:38:38,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:38,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:38,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:38,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:38,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:38,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:38,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:38,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:38,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:38,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:38:38,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:38,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:38,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 30 proven. 367 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-09-25 06:38:38,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647900490] [2020-09-25 06:38:38,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:38,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 06:38:38,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563431744] [2020-09-25 06:38:38,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 06:38:38,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:38,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 06:38:38,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:38:38,319 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 17 states. [2020-09-25 06:38:38,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:38,559 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2020-09-25 06:38:38,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 06:38:38,559 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 117 [2020-09-25 06:38:38,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:38,561 INFO L225 Difference]: With dead ends: 86 [2020-09-25 06:38:38,561 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 06:38:38,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2020-09-25 06:38:38,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 06:38:38,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-25 06:38:38,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 06:38:38,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2020-09-25 06:38:38,569 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 117 [2020-09-25 06:38:38,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:38,570 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2020-09-25 06:38:38,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 06:38:38,570 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2020-09-25 06:38:38,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 06:38:38,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:38,572 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:38,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 06:38:38,572 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:38,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:38,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1141580405, now seen corresponding path program 12 times [2020-09-25 06:38:38,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:38,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642009429] [2020-09-25 06:38:38,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:38,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:39,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:42,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:42,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 06:38:42,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:42,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3599 [2020-09-25 06:38:42,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:42,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:42,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 06:38:42,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:42,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 06:38:42,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:42,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:42,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:42,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:42,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:42,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:42,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:38:42,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:42,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:42,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:42,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:42,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:42,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:43,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:43,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 06:38:43,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:43,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-09-25 06:38:43,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:43,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 06:38:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 06:38:43,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:43,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:43,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:44,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:44,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 06:38:44,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:44,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 896 [2020-09-25 06:38:44,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:44,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:44,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 06:38:44,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:44,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 06:38:44,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:44,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:44,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:44,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:44,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 06:38:44,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:44,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-09-25 06:38:44,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:44,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 06:38:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 06:38:44,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:44,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:44,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:45,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:45,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 06:38:45,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:45,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 609 [2020-09-25 06:38:45,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:45,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 06:38:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 06:38:45,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:45,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:45,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:46,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:46,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 06:38:46,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:46,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-09-25 06:38:46,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:46,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:46,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 06:38:46,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:46,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 06:38:46,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:46,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:46,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:46,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:46,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:38:46,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:46,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-25 06:38:46,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:46,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 06:38:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:38:46,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:46,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:46,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:46,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:46,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:38:46,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:46,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-25 06:38:46,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:46,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:38:46,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:46,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:38:46,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:46,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:46,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking...