/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i10_o10-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:20:03,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:20:03,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:20:03,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:20:03,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:20:03,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:20:03,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:20:03,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:20:03,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:20:03,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:20:03,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:20:03,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:20:03,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:20:03,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:20:03,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:20:03,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:20:03,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:20:03,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:20:03,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:20:03,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:20:03,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:20:03,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:20:03,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:20:03,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:20:03,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:20:03,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:20:03,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:20:03,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:20:03,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:20:03,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:20:03,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:20:03,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:20:03,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:20:03,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:20:03,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:20:03,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:20:03,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:20:03,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:20:03,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:20:03,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:20:03,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:20:03,386 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 04:20:03,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:20:03,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:20:03,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:20:03,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:20:03,441 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:20:03,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:20:03,441 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:20:03,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:20:03,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:20:03,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:20:03,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:20:03,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:20:03,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:20:03,444 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:20:03,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:20:03,445 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:20:03,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:20:03,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:20:03,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:20:03,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:20:03,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:20:03,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:20:03,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:20:03,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:20:03,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:20:03,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:20:03,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:20:03,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:20:03,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:20:03,447 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:20:03,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:20:04,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:20:04,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:20:04,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:20:04,015 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:20:04,016 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i10_o10-1.c [2020-09-25 04:20:04,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea8c61d01/9140a3f6aaad444696dc0057f178ed0e/FLAGbcb0334cc [2020-09-25 04:20:04,682 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:20:04,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i10_o10-1.c [2020-09-25 04:20:04,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea8c61d01/9140a3f6aaad444696dc0057f178ed0e/FLAGbcb0334cc [2020-09-25 04:20:05,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea8c61d01/9140a3f6aaad444696dc0057f178ed0e [2020-09-25 04:20:05,041 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:20:05,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:20:05,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:20:05,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:20:05,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:20:05,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:20:05" (1/1) ... [2020-09-25 04:20:05,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd8ad23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:05, skipping insertion in model container [2020-09-25 04:20:05,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:20:05" (1/1) ... [2020-09-25 04:20:05,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:20:05,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:20:05,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:20:05,303 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:20:05,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:20:05,335 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:20:05,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:05 WrapperNode [2020-09-25 04:20:05,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:20:05,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:20:05,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:20:05,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:20:05,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:05" (1/1) ... [2020-09-25 04:20:05,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:05" (1/1) ... [2020-09-25 04:20:05,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:05" (1/1) ... [2020-09-25 04:20:05,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:05" (1/1) ... [2020-09-25 04:20:05,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:05" (1/1) ... [2020-09-25 04:20:05,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:05" (1/1) ... [2020-09-25 04:20:05,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:05" (1/1) ... [2020-09-25 04:20:05,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:20:05,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:20:05,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:20:05,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:20:05,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:05" (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 04:20:05,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:20:05,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:20:05,528 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 04:20:05,528 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:20:05,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:20:05,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:20:05,529 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 04:20:05,529 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:20:05,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:20:05,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:20:05,726 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:20:05,727 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:20:05,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:20:05 BoogieIcfgContainer [2020-09-25 04:20:05,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:20:05,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:20:05,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:20:05,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:20:05,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:20:05" (1/3) ... [2020-09-25 04:20:05,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e3b609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:20:05, skipping insertion in model container [2020-09-25 04:20:05,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:05" (2/3) ... [2020-09-25 04:20:05,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e3b609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:20:05, skipping insertion in model container [2020-09-25 04:20:05,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:20:05" (3/3) ... [2020-09-25 04:20:05,743 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i10_o10-1.c [2020-09-25 04:20:05,757 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:20:05,772 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:20:05,830 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:20:05,865 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:20:05,865 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:20:05,865 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:20:05,865 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:20:05,866 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:20:05,866 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:20:05,866 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:20:05,866 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:20:05,893 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 04:20:05,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 04:20:05,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:05,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:05,904 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:05,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:05,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-25 04:20:05,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:05,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509561441] [2020-09-25 04:20:05,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:06,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:06,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:06,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:06,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:20:06,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:06,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 04:20:06,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:06,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:20:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:20:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:20:06,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:20:06,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:06,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:06,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:06,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:06,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:06,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:20:06,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:06,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:06,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:06,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:06,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:06,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:06,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:06,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:06,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:20:06,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:06,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:06,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:06,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:06,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:06,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:06,445 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 04:20:06,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509561441] [2020-09-25 04:20:06,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:20:06,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:20:06,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070463] [2020-09-25 04:20:06,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:20:06,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:06,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:20:06,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:20:06,480 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 04:20:06,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:06,572 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 04:20:06,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:20:06,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 04:20:06,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:06,590 INFO L225 Difference]: With dead ends: 37 [2020-09-25 04:20:06,590 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 04:20:06,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:20:06,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 04:20:06,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 04:20:06,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 04:20:06,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-25 04:20:06,652 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-25 04:20:06,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:06,652 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-25 04:20:06,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:20:06,653 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-25 04:20:06,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 04:20:06,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:06,656 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:06,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:20:06,657 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:06,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:06,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-25 04:20:06,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:06,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020124311] [2020-09-25 04:20:06,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:06,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:06,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:07,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 04:20:07,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:07,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-09-25 04:20:07,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:07,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:07,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:20:07,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:20:07,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 04:20:07,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:07,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:07,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:07,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:07,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:07,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:20:07,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:07,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:07,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:07,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:07,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:07,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:07,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:07,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:07,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:07,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:07,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 04:20:07,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:07,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:07,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:07,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:07,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:07,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:07,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:07,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:20:07,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:07,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:07,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:07,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:07,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:07,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:20:07,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020124311] [2020-09-25 04:20:07,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:07,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:20:07,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490606732] [2020-09-25 04:20:07,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:20:07,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:07,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:20:07,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:20:07,333 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-25 04:20:07,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:07,430 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-25 04:20:07,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:20:07,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 04:20:07,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:07,433 INFO L225 Difference]: With dead ends: 34 [2020-09-25 04:20:07,433 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 04:20:07,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:20:07,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 04:20:07,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 04:20:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 04:20:07,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 04:20:07,450 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-25 04:20:07,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:07,450 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 04:20:07,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:20:07,452 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 04:20:07,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 04:20:07,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:07,456 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:07,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:20:07,456 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:07,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:07,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-25 04:20:07,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:07,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159180106] [2020-09-25 04:20:07,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:07,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:08,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 04:20:08,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:08,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-09-25 04:20:08,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:08,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:20:08,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 04:20:08,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:20:08,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:08,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:08,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:08,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:08,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:08,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:20:08,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:08,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:08,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:08,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:08,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:08,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:08,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:08,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:08,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 04:20:08,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:08,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:08,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:08,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:08,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:08,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:08,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:08,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:08,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:08,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:08,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 04:20:08,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:08,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:08,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:08,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:08,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:08,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:08,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:08,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:08,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:08,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:08,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:20:08,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:08,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:08,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:08,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 04:20:08,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159180106] [2020-09-25 04:20:08,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:08,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:20:08,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240185904] [2020-09-25 04:20:08,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:20:08,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:08,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:20:08,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:20:08,272 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-09-25 04:20:08,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:08,361 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 04:20:08,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:20:08,362 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 04:20:08,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:08,364 INFO L225 Difference]: With dead ends: 39 [2020-09-25 04:20:08,364 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 04:20:08,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:20:08,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 04:20:08,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 04:20:08,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 04:20:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 04:20:08,373 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-25 04:20:08,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:08,374 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 04:20:08,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:20:08,374 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 04:20:08,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 04:20:08,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:08,376 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:08,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:20:08,377 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:08,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:08,378 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-25 04:20:08,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:08,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500186881] [2020-09-25 04:20:08,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:08,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:08,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:09,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 04:20:09,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:09,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 881 [2020-09-25 04:20:09,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:09,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 04:20:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 04:20:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:20:09,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:09,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:09,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:09,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:09,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:09,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:20:09,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:09,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:09,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:09,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:09,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:09,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:09,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:09,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:09,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:20:09,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:09,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 04:20:09,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:09,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:09,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:09,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:09,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:09,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:09,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:09,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 04:20:09,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:09,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:09,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:20:09,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:09,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:09,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:09,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:09,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 04:20:09,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:09,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:09,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:09,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:09,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:09,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:20:09,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:09,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:09,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:09,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:09,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:09,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:20:09,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:09,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:09,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:09,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:20:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 04:20:09,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500186881] [2020-09-25 04:20:09,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:09,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 04:20:09,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223828826] [2020-09-25 04:20:09,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 04:20:09,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:09,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 04:20:09,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:20:09,781 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-25 04:20:09,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:09,949 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-25 04:20:09,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:20:09,958 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-25 04:20:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:09,961 INFO L225 Difference]: With dead ends: 44 [2020-09-25 04:20:09,962 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 04:20:09,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:20:09,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 04:20:09,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 04:20:09,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 04:20:09,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 04:20:09,977 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-25 04:20:09,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:09,981 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 04:20:09,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 04:20:09,981 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 04:20:09,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 04:20:09,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:09,985 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:09,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:20:09,985 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:09,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:09,986 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-25 04:20:09,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:09,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474664190] [2020-09-25 04:20:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:10,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:10,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:11,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:11,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 04:20:11,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:11,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1516 [2020-09-25 04:20:11,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:11,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:11,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:20:11,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 04:20:11,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:20:11,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:20:11,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:11,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:11,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:11,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:11,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:11,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:20:11,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:11,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:11,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:11,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:11,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:11,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:11,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:11,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:11,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:11,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 04:20:11,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 04:20:11,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:11,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:11,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:11,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:11,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:20:11,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:11,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:11,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:11,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:11,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:20:11,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:11,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 04:20:11,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:11,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:11,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:11,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:11,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:12,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:12,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:12,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:12,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 04:20:12,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:12,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:12,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:12,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:12,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:12,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:20:12,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:12,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:12,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:12,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:12,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 04:20:12,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:12,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:12,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:12,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:12,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:12,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:12,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:12,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:12,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:12,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:12,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:12,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:20:12,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:12,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:12,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:12,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:12,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:12,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:12,221 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 04:20:12,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474664190] [2020-09-25 04:20:12,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:12,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 04:20:12,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360829506] [2020-09-25 04:20:12,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 04:20:12,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:12,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 04:20:12,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:20:12,224 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2020-09-25 04:20:12,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:12,359 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-25 04:20:12,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 04:20:12,359 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-25 04:20:12,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:12,361 INFO L225 Difference]: With dead ends: 49 [2020-09-25 04:20:12,361 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 04:20:12,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-25 04:20:12,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 04:20:12,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 04:20:12,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 04:20:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 04:20:12,380 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-25 04:20:12,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:12,381 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 04:20:12,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 04:20:12,382 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 04:20:12,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 04:20:12,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:12,385 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:12,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:20:12,385 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:12,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:12,389 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-25 04:20:12,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:12,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860579293] [2020-09-25 04:20:12,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:12,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:12,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:14,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:14,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:20:14,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:14,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2309 [2020-09-25 04:20:14,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:14,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 04:20:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 04:20:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:20:14,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:14,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:14,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:14,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:14,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:14,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:14,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:14,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:14,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:14,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:20:14,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:14,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:15,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 04:20:15,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:15,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-25 04:20:15,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:15,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:20:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:20:15,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:15,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:15,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:15,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 04:20:15,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:15,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 04:20:15,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:15,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:15,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:20:15,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:15,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:15,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:15,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:20:15,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:15,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 04:20:15,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:15,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:15,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:15,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:15,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:15,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:15,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:15,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:15,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:15,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:15,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 04:20:15,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:15,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:15,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:15,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:15,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:15,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:15,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:15,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 04:20:15,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:15,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:15,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:15,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:15,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:15,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:15,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:15,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:15,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:15,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:15,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:15,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:20:15,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:15,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:15,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 04:20:15,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860579293] [2020-09-25 04:20:15,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:15,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 04:20:15,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652846544] [2020-09-25 04:20:15,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 04:20:15,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:15,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 04:20:15,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:20:15,707 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-25 04:20:15,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:15,930 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-25 04:20:15,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 04:20:15,932 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 04:20:15,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:15,935 INFO L225 Difference]: With dead ends: 54 [2020-09-25 04:20:15,936 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 04:20:15,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-09-25 04:20:15,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 04:20:15,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 04:20:15,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 04:20:15,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-25 04:20:15,953 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-25 04:20:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:15,953 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-25 04:20:15,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 04:20:15,953 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-25 04:20:15,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 04:20:15,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:15,957 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:15,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:20:15,959 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:15,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:15,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-25 04:20:15,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:15,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944126925] [2020-09-25 04:20:15,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:15,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:16,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:18,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:18,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:20:18,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:18,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2974 [2020-09-25 04:20:18,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:18,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:18,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 04:20:18,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 04:20:18,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 04:20:18,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:18,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:18,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:18,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:18,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:18,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:18,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:18,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:18,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:18,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:18,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:18,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:18,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:18,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:19,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:19,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:19,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 04:20:19,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:19,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-25 04:20:19,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:19,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:20:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 04:20:19,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:19,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:19,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:19,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:19,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 04:20:19,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:19,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 04:20:19,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:19,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:19,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:20:19,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:19,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:20:19,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:19,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:19,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:19,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:19,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 04:20:19,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:19,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 04:20:19,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:19,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:19,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:19,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:20:19,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:19,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:19,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:19,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:19,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:20:19,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:19,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 04:20:19,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:19,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:19,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:19,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:19,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:19,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:19,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:20,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:20,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:20,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 04:20:20,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:20,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:20,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:20,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:20,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:20,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:20,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:20,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:20,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:20,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:20,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 04:20:20,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:20,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:20,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:20,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:20,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 04:20:20,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:20,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:20,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:20,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:20,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:20:20,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:20,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:20,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:20,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:20,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:20,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:20,200 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 04:20:20,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944126925] [2020-09-25 04:20:20,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:20,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 04:20:20,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846420912] [2020-09-25 04:20:20,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 04:20:20,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:20,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 04:20:20,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 04:20:20,203 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2020-09-25 04:20:20,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:20,361 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 04:20:20,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 04:20:20,361 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-09-25 04:20:20,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:20,363 INFO L225 Difference]: With dead ends: 59 [2020-09-25 04:20:20,363 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 04:20:20,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-09-25 04:20:20,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 04:20:20,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 04:20:20,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 04:20:20,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 04:20:20,371 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-25 04:20:20,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:20,372 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 04:20:20,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 04:20:20,372 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 04:20:20,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 04:20:20,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:20,373 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:20,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:20:20,374 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:20,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:20,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-25 04:20:20,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:20,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085901241] [2020-09-25 04:20:20,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:20,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:20,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:24,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:24,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 04:20:24,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:24,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3705 [2020-09-25 04:20:24,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:24,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:24,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 04:20:24,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 04:20:24,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:20:24,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:24,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:24,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:24,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:24,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:24,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:24,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:24,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:24,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:24,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:24,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:24,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:24,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:24,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:24,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:24,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:24,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 04:20:24,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:24,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-09-25 04:20:24,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:24,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:20:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:20:24,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:24,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:24,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:24,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:24,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 04:20:24,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:24,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-25 04:20:24,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:24,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:20:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 04:20:24,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:24,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:24,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:25,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 04:20:25,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:25,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 04:20:25,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:25,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:25,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:20:25,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:25,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:20:25,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:25,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:25,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:25,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 04:20:25,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:25,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 04:20:25,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:25,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:25,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:25,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:20:25,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:25,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:25,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:25,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:20:25,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:25,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 04:20:25,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:25,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:25,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:25,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:25,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:25,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:25,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:25,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:25,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:25,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:25,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 04:20:25,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:25,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:25,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:25,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:25,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:25,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:25,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:25,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:20:25,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:25,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:25,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:25,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:25,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:25,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:25,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:25,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:25,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:20:25,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:25,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:25,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:25,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:25,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:25,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-25 04:20:25,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085901241] [2020-09-25 04:20:25,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:25,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 04:20:25,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011562940] [2020-09-25 04:20:25,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 04:20:25,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:25,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 04:20:25,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 04:20:25,569 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 19 states. [2020-09-25 04:20:25,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:25,746 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-25 04:20:25,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 04:20:25,746 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 72 [2020-09-25 04:20:25,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:25,748 INFO L225 Difference]: With dead ends: 64 [2020-09-25 04:20:25,748 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 04:20:25,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-09-25 04:20:25,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 04:20:25,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 04:20:25,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 04:20:25,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 04:20:25,763 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-25 04:20:25,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:25,764 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 04:20:25,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 04:20:25,764 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 04:20:25,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 04:20:25,768 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:25,768 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:25,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:20:25,769 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:25,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:25,770 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-25 04:20:25,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:25,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404114850] [2020-09-25 04:20:25,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:25,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:26,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:30,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:30,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 04:20:30,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:30,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4528 [2020-09-25 04:20:30,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:30,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 04:20:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 04:20:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 04:20:30,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:30,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:30,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:30,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:30,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:30,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:30,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:20:30,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:30,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:30,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:30,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:30,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:30,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:30,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 04:20:30,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:30,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-09-25 04:20:30,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:30,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:30,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 04:20:30,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 04:20:30,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:30,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:30,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:31,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:31,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 04:20:31,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:31,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-09-25 04:20:31,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:31,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:31,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:20:31,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:31,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:20:31,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:31,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:31,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:31,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:31,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 04:20:31,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:31,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 04:20:31,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:31,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:20:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 04:20:31,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:31,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:31,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:31,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:31,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 04:20:31,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:31,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 04:20:31,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:31,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:31,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:20:31,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:31,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:20:31,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:31,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:31,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:31,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:31,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 04:20:31,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:31,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 04:20:31,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:31,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:31,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:31,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:31,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:20:31,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:31,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:31,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:31,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:31,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:20:31,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:31,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 04:20:31,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:31,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:31,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:31,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:31,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:31,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:31,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:31,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 04:20:31,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:31,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:31,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:32,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:32,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:32,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:32,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:32,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:32,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:20:32,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:32,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:32,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:32,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:32,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:32,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:32,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:32,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:32,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:32,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:32,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:32,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:20:32,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:32,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:32,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:32,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:32,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:32,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 04:20:32,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404114850] [2020-09-25 04:20:32,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:32,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 04:20:32,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881660112] [2020-09-25 04:20:32,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 04:20:32,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:32,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 04:20:32,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 04:20:32,171 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2020-09-25 04:20:32,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:32,370 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-25 04:20:32,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 04:20:32,370 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-09-25 04:20:32,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:32,374 INFO L225 Difference]: With dead ends: 69 [2020-09-25 04:20:32,375 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 04:20:32,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2020-09-25 04:20:32,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 04:20:32,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 04:20:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 04:20:32,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-25 04:20:32,388 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-25 04:20:32,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:32,388 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-25 04:20:32,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 04:20:32,393 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-25 04:20:32,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 04:20:32,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:32,394 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:32,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 04:20:32,394 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:32,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:32,395 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-25 04:20:32,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:32,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12587738] [2020-09-25 04:20:32,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:32,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:32,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:37,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:37,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 04:20:37,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:37,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:20:37,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:37,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:37,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 04:20:37,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 04:20:37,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 04:20:37,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:37,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:37,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:37,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:37,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:37,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:37,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:20:37,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:37,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:37,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:37,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:37,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:37,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:37,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:20:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:37,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:37,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:37,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 04:20:37,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:37,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-09-25 04:20:37,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:37,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 04:20:37,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:37,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 04:20:37,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:37,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:37,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:38,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:38,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 04:20:38,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:38,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-09-25 04:20:38,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:38,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:38,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 04:20:38,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:38,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 04:20:38,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:38,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:38,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:38,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:38,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 04:20:38,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:38,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-09-25 04:20:38,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:38,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:20:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:20:38,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:38,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:38,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:39,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:39,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 04:20:39,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:39,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 04:20:39,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:39,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:20:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 04:20:39,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:39,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:39,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:39,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:39,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 04:20:39,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:39,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 04:20:39,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:39,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:39,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:20:39,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:39,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:20:39,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:39,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:39,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:39,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:39,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 04:20:39,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:39,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 04:20:39,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:39,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:39,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:20:39,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:39,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:20:39,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:39,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:39,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:39,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:39,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:20:39,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:39,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 04:20:39,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:39,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:20:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:20:39,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:39,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:39,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:39,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:39,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:20:39,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 04:20:39,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:39,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:39,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:20:39,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:39,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:20:39,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:39,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:39,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:39,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:39,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:20:39,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:39,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:20:39,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:39,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:39,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:20:39,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:39,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:39,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:39,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:39,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:39,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:39,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:20:39,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:39,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:39,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:39,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:39,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:39,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:20:39,802 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 04:20:39,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12587738] [2020-09-25 04:20:39,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:20:39,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 04:20:39,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209453392] [2020-09-25 04:20:39,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 04:20:39,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:39,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 04:20:39,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-09-25 04:20:39,804 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 23 states. [2020-09-25 04:20:40,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:40,012 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-25 04:20:40,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 04:20:40,012 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 88 [2020-09-25 04:20:40,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:40,013 INFO L225 Difference]: With dead ends: 74 [2020-09-25 04:20:40,014 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 04:20:40,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 04:20:40,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 04:20:40,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-25 04:20:40,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 04:20:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-25 04:20:40,022 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-25 04:20:40,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:40,022 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-25 04:20:40,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 04:20:40,023 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-25 04:20:40,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 04:20:40,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:40,024 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:20:40,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 04:20:40,024 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:40,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:40,025 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-25 04:20:40,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:40,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94058796] [2020-09-25 04:20:40,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 04:20:40,040 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 04:20:40,040 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 04:20:40,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 04:20:40,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:20:40 BoogieIcfgContainer [2020-09-25 04:20:40,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:20:40,076 INFO L168 Benchmark]: Toolchain (without parser) took 35031.81 ms. Allocated memory was 142.6 MB in the beginning and 397.4 MB in the end (delta: 254.8 MB). Free memory was 105.1 MB in the beginning and 116.3 MB in the end (delta: -11.2 MB). Peak memory consumption was 243.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:20:40,077 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 142.6 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 04:20:40,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.99 ms. Allocated memory is still 142.6 MB. Free memory was 104.4 MB in the beginning and 95.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-09-25 04:20:40,078 INFO L168 Benchmark]: Boogie Preprocessor took 30.86 ms. Allocated memory is still 142.6 MB. Free memory was 95.3 MB in the beginning and 94.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-25 04:20:40,079 INFO L168 Benchmark]: RCFGBuilder took 364.13 ms. Allocated memory was 142.6 MB in the beginning and 202.9 MB in the end (delta: 60.3 MB). Free memory was 94.0 MB in the beginning and 170.9 MB in the end (delta: -77.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:20:40,080 INFO L168 Benchmark]: TraceAbstraction took 34338.84 ms. Allocated memory was 202.9 MB in the beginning and 397.4 MB in the end (delta: 194.5 MB). Free memory was 170.9 MB in the beginning and 116.3 MB in the end (delta: 54.7 MB). Peak memory consumption was 249.2 MB. Max. memory is 7.1 GB. [2020-09-25 04:20:40,083 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 142.6 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.99 ms. Allocated memory is still 142.6 MB. Free memory was 104.4 MB in the beginning and 95.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.86 ms. Allocated memory is still 142.6 MB. Free memory was 95.3 MB in the beginning and 94.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 364.13 ms. Allocated memory was 142.6 MB in the beginning and 202.9 MB in the end (delta: 60.3 MB). Free memory was 94.0 MB in the beginning and 170.9 MB in the end (delta: -77.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34338.84 ms. Allocated memory was 202.9 MB in the beginning and 397.4 MB in the end (delta: 194.5 MB). Free memory was 170.9 MB in the beginning and 116.3 MB in the end (delta: 54.7 MB). Peak memory consumption was 249.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int input = 10; [L11] CALL, EXPR id(input) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND TRUE x==0 [L5] return 0; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) [L11] int result = id(input); [L12] COND TRUE result == 10 [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.1s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 185 SDtfs, 93 SDslu, 1099 SDs, 0 SdLazy, 449 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 327 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 31.8s InterpolantComputationTime, 616 NumberOfCodeBlocks, 616 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 510 ConstructedInterpolants, 0 QuantifiedInterpolants, 68829 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 450/1140 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...