/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=1.0 --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/fibo_20-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:53:13,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:53:13,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:53:13,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:53:13,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:53:13,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:53:13,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:53:13,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:53:13,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:53:13,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:53:13,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:53:13,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:53:13,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:53:13,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:53:13,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:53:13,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:53:13,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:53:13,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:53:13,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:53:13,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:53:13,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:53:13,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:53:13,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:53:13,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:53:13,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:53:13,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:53:13,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:53:13,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:53:13,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:53:13,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:53:13,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:53:13,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:53:13,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:53:13,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:53:13,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:53:13,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:53:13,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:53:13,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:53:13,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:53:13,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:53:13,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:53:13,500 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 08:53:13,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:53:13,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:53:13,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:53:13,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:53:13,551 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:53:13,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:53:13,552 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:53:13,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:53:13,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:53:13,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:53:13,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:53:13,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:53:13,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:53:13,554 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:53:13,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:53:13,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:53:13,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:53:13,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:53:13,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:53:13,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:53:13,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:53:13,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:53:13,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:53:13,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:53:13,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:53:13,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:53:13,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:53:13,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:53:13,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:53:13,557 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 08:53:14,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:53:14,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:53:14,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:53:14,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:53:14,052 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:53:14,053 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_20-1.c [2020-09-25 08:53:14,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/becdb5b2b/ae0c6696444b43d1a8241762f921b20e/FLAGa107da9e0 [2020-09-25 08:53:14,632 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:53:14,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_20-1.c [2020-09-25 08:53:14,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/becdb5b2b/ae0c6696444b43d1a8241762f921b20e/FLAGa107da9e0 [2020-09-25 08:53:15,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/becdb5b2b/ae0c6696444b43d1a8241762f921b20e [2020-09-25 08:53:15,016 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:53:15,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:53:15,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:53:15,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:53:15,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:53:15,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:53:15" (1/1) ... [2020-09-25 08:53:15,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e64c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:15, skipping insertion in model container [2020-09-25 08:53:15,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:53:15" (1/1) ... [2020-09-25 08:53:15,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:53:15,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:53:15,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:53:15,272 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:53:15,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:53:15,309 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:53:15,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:15 WrapperNode [2020-09-25 08:53:15,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:53:15,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:53:15,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:53:15,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:53:15,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:15" (1/1) ... [2020-09-25 08:53:15,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:15" (1/1) ... [2020-09-25 08:53:15,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:15" (1/1) ... [2020-09-25 08:53:15,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:15" (1/1) ... [2020-09-25 08:53:15,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:15" (1/1) ... [2020-09-25 08:53:15,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:15" (1/1) ... [2020-09-25 08:53:15,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:15" (1/1) ... [2020-09-25 08:53:15,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:53:15,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:53:15,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:53:15,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:53:15,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:15" (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 08:53:15,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:53:15,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:53:15,496 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 08:53:15,496 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:53:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:53:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:53:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 08:53:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:53:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:53:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:53:15,692 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:53:15,692 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 08:53:15,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:53:15 BoogieIcfgContainer [2020-09-25 08:53:15,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:53:15,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:53:15,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:53:15,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:53:15,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:53:15" (1/3) ... [2020-09-25 08:53:15,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4cf838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:53:15, skipping insertion in model container [2020-09-25 08:53:15,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:15" (2/3) ... [2020-09-25 08:53:15,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4cf838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:53:15, skipping insertion in model container [2020-09-25 08:53:15,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:53:15" (3/3) ... [2020-09-25 08:53:15,707 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_20-1.c [2020-09-25 08:53:15,719 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:53:15,729 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:53:15,756 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:53:15,796 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:53:15,796 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:53:15,797 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:53:15,797 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:53:15,797 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:53:15,797 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:53:15,798 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:53:15,798 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:53:15,823 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 08:53:15,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 08:53:15,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:15,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:15,835 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:15,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:15,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 08:53:15,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:15,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497359492] [2020-09-25 08:53:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:15,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:16,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:16,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:16,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:53:16,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:16,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-25 08:53:16,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:16,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:16,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:16,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 08:53:16,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:16,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:53:16,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:16,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:16,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:16,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:16,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:16,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:53:16,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:16,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:16,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:16,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:16,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:16,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:16,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:16,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:16,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 08:53:16,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:16,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:16,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:53:16,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:16,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:53:16,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:16,368 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 08:53:16,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497359492] [2020-09-25 08:53:16,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:53:16,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:53:16,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542841552] [2020-09-25 08:53:16,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:53:16,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:16,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:53:16,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:53:16,403 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 08:53:16,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:16,509 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 08:53:16,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:53:16,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 08:53:16,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:16,526 INFO L225 Difference]: With dead ends: 44 [2020-09-25 08:53:16,526 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 08:53:16,531 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 08:53:16,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 08:53:16,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 08:53:16,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 08:53:16,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 08:53:16,585 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 08:53:16,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:16,586 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 08:53:16,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:53:16,587 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 08:53:16,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 08:53:16,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:16,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:16,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:53:16,590 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:16,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:16,591 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 08:53:16,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:16,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849007949] [2020-09-25 08:53:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:16,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:16,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:16,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:16,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 08:53:16,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:16,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 08:53:16,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:16,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:16,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:16,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:53:16,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:16,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:16,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:16,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:16,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:53:16,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:16,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:16,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:16,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:16,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:16,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:16,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:16,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:16,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:16,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:16,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:16,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 08:53:16,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:16,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:16,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:16,896 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 08:53:16,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849007949] [2020-09-25 08:53:16,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:53:16,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:53:16,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598943773] [2020-09-25 08:53:16,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:53:16,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:16,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:53:16,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:53:16,901 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 08:53:16,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:16,956 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 08:53:16,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:53:16,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 08:53:16,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:16,959 INFO L225 Difference]: With dead ends: 36 [2020-09-25 08:53:16,959 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 08:53:16,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:53:16,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 08:53:16,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 08:53:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 08:53:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 08:53:16,968 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 08:53:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:16,969 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 08:53:16,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:53:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 08:53:16,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 08:53:16,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:16,971 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:16,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:53:16,972 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:16,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:16,972 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 08:53:16,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:16,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759342700] [2020-09-25 08:53:16,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:17,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:17,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:17,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:17,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:18,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:18,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 08:53:18,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:53:18,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1956 [2020-09-25 08:53:18,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:18,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 08:53:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:53:18,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:18,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:18,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:18,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:18,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:18,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:18,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:53:18,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:18,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:18,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:18,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:19,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:53:19,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:19,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-09-25 08:53:19,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:19,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:19,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:19,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:19,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 08:53:19,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:19,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:19,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:19,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:19,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 08:53:19,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:19,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:19,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:53:19,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:19,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:53:19,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:19,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:19,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:19,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:19,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 08:53:19,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:19,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:19,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:19,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:19,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:19,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:53:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 08:53:19,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759342700] [2020-09-25 08:53:19,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:19,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:53:19,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280033391] [2020-09-25 08:53:19,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:53:19,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:19,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:53:19,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:53:19,519 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2020-09-25 08:53:19,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:19,638 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-09-25 08:53:19,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 08:53:19,642 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 08:53:19,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:19,644 INFO L225 Difference]: With dead ends: 47 [2020-09-25 08:53:19,644 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 08:53:19,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:53:19,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 08:53:19,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-09-25 08:53:19,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 08:53:19,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 08:53:19,665 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-25 08:53:19,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:19,666 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 08:53:19,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:53:19,666 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 08:53:19,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 08:53:19,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:19,671 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:19,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:53:19,672 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:19,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:19,672 INFO L82 PathProgramCache]: Analyzing trace with hash 795081563, now seen corresponding path program 1 times [2020-09-25 08:53:19,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:19,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435116274] [2020-09-25 08:53:19,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:23,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 08:53:23,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:53:23,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3343 [2020-09-25 08:53:23,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:23,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:23,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 08:53:23,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:53:23,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:23,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:23,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:23,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:23,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:23,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:53:23,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:23,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:23,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:23,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:23,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:23,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:24,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:24,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:53:24,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:53:24,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 940 [2020-09-25 08:53:24,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:24,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:24,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:24,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:24,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:53:24,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:24,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:24,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:24,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:24,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:24,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:24,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:53:24,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:24,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:24,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:53:24,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:24,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:53:24,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:24,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:24,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:24,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:24,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:24,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:24,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 08:53:24,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:24,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:24,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:24,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:24,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:24,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 08:53:24,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435116274] [2020-09-25 08:53:24,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:24,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:53:24,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094005302] [2020-09-25 08:53:24,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:53:24,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:24,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:53:24,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:53:24,135 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2020-09-25 08:53:24,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:24,238 INFO L93 Difference]: Finished difference Result 58 states and 75 transitions. [2020-09-25 08:53:24,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 08:53:24,239 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 08:53:24,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:24,242 INFO L225 Difference]: With dead ends: 58 [2020-09-25 08:53:24,243 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 08:53:24,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:53:24,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 08:53:24,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2020-09-25 08:53:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 08:53:24,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-25 08:53:24,259 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 34 [2020-09-25 08:53:24,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:24,262 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-25 08:53:24,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:53:24,262 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-25 08:53:24,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 08:53:24,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:24,264 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:24,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:53:24,267 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:24,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:24,268 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 2 times [2020-09-25 08:53:24,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:24,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646272265] [2020-09-25 08:53:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:24,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:24,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:25,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:25,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 08:53:25,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:25,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 904 [2020-09-25 08:53:25,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:25,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:25,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:25,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 08:53:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:53:25,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:25,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:25,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:25,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:25,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:25,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:25,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:25,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:25,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:25,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:25,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:25,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:25,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:25,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:53:25,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:25,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 08:53:25,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:25,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:25,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:25,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:25,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:53:25,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:25,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:25,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:25,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:25,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:25,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:25,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:53:25,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:25,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:25,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:53:25,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:25,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:25,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:25,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:25,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:25,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:25,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:25,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:25,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:53:25,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:25,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:25,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:25,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:25,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 08:53:25,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646272265] [2020-09-25 08:53:25,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:25,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:53:25,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103998843] [2020-09-25 08:53:25,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:53:25,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:25,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:53:25,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:53:25,379 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 9 states. [2020-09-25 08:53:25,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:25,480 INFO L93 Difference]: Finished difference Result 63 states and 89 transitions. [2020-09-25 08:53:25,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 08:53:25,481 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 08:53:25,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:25,484 INFO L225 Difference]: With dead ends: 63 [2020-09-25 08:53:25,484 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 08:53:25,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:53:25,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 08:53:25,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-09-25 08:53:25,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 08:53:25,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 80 transitions. [2020-09-25 08:53:25,497 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 80 transitions. Word has length 34 [2020-09-25 08:53:25,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:25,498 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 80 transitions. [2020-09-25 08:53:25,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:53:25,498 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 80 transitions. [2020-09-25 08:53:25,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 08:53:25,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:25,501 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:25,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:53:25,502 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:25,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:25,502 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 08:53:25,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:25,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142628724] [2020-09-25 08:53:25,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:25,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:25,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:25,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:25,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:25,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:27,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:53:27,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:53:27,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1534 [2020-09-25 08:53:27,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:27,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:27,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:27,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 08:53:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:53:27,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:27,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:27,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:27,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:27,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:27,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:27,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:27,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:27,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:27,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:27,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:27,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:27,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:27,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:27,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:53:27,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:27,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-09-25 08:53:27,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:27,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:53:27,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:27,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:27,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:27,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:27,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:27,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:53:27,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:27,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:53:27,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:27,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:27,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:27,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:27,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:27,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:27,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:27,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:53:27,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:27,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:27,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:27,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:27,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:27,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 08:53:27,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142628724] [2020-09-25 08:53:27,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:27,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:53:27,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561845942] [2020-09-25 08:53:27,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:53:27,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:27,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:53:27,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:53:27,691 INFO L87 Difference]: Start difference. First operand 54 states and 80 transitions. Second operand 9 states. [2020-09-25 08:53:27,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:27,788 INFO L93 Difference]: Finished difference Result 69 states and 99 transitions. [2020-09-25 08:53:27,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 08:53:27,790 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 08:53:27,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:27,793 INFO L225 Difference]: With dead ends: 69 [2020-09-25 08:53:27,794 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 08:53:27,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:53:27,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 08:53:27,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2020-09-25 08:53:27,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 08:53:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 80 transitions. [2020-09-25 08:53:27,812 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 80 transitions. Word has length 35 [2020-09-25 08:53:27,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:27,812 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 80 transitions. [2020-09-25 08:53:27,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:53:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 80 transitions. [2020-09-25 08:53:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 08:53:27,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:27,820 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:27,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:53:27,821 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:27,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:27,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1485744477, now seen corresponding path program 3 times [2020-09-25 08:53:27,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:27,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536969506] [2020-09-25 08:53:27,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:27,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:32,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:32,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:32,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 08:53:32,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:53:32,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:53:32,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:32,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:32,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:32,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:32,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 08:53:32,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:32,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:32,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:32,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:32,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:32,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:32,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:53:32,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:32,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:32,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:32,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:32,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:32,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:32,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:32,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:32,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:33,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:33,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:33,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:35,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:53:35,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:53:35,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2692 [2020-09-25 08:53:35,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:35,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:53:35,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:35,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:35,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:35,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:35,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:35,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:53:35,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:35,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:35,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:35,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:35,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:35,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:35,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:35,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:35,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:53:35,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:35,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 08:53:35,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:35,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:35,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:35,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:35,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:53:35,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:35,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:35,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:35,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:35,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:35,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:53:35,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:35,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:35,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:35,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:35,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:35,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:35,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:35,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:35,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:35,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:35,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:53:35,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:35,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:35,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:35,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:35,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:35,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 08:53:35,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536969506] [2020-09-25 08:53:35,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:35,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 08:53:35,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792964836] [2020-09-25 08:53:35,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:53:35,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:35,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:53:35,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:53:35,688 INFO L87 Difference]: Start difference. First operand 54 states and 80 transitions. Second operand 6 states. [2020-09-25 08:53:35,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:35,791 INFO L93 Difference]: Finished difference Result 104 states and 169 transitions. [2020-09-25 08:53:35,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:53:35,793 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-25 08:53:35,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:35,794 INFO L225 Difference]: With dead ends: 104 [2020-09-25 08:53:35,794 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 08:53:35,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:53:35,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 08:53:35,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-09-25 08:53:35,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 08:53:35,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2020-09-25 08:53:35,818 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 51 [2020-09-25 08:53:35,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:35,821 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2020-09-25 08:53:35,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:53:35,821 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2020-09-25 08:53:35,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 08:53:35,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:35,826 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:35,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:53:35,826 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:35,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:35,827 INFO L82 PathProgramCache]: Analyzing trace with hash -538497119, now seen corresponding path program 2 times [2020-09-25 08:53:35,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:35,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436000683] [2020-09-25 08:53:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:35,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:38,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:38,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:39,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:40,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:40,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 08:53:40,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 08:53:40,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:53:40,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:40,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:40,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:53:40,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 08:53:40,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:53:40,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:40,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:40,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:40,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:40,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:40,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:40,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:40,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:40,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:40,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:40,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:40,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:40,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:40,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:40,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:40,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:40,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:40,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:45,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 08:53:45,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:53:45,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4404 [2020-09-25 08:53:45,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:45,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:45,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:53:45,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:45,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 08:53:45,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:45,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:45,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:45,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:45,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:45,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:53:45,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:45,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:53:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:45,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:45,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:45,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:45,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:53:45,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:45,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-09-25 08:53:45,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:45,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:45,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:45,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:45,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:53:45,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:45,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:45,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:45,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:45,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:45,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:53:45,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:45,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:53:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:45,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:45,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:45,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:45,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:45,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:45,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:53:45,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:45,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:45,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:45,888 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-25 08:53:45,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436000683] [2020-09-25 08:53:45,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:45,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:53:45,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877564434] [2020-09-25 08:53:45,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:53:45,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:45,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:53:45,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:53:45,892 INFO L87 Difference]: Start difference. First operand 50 states and 68 transitions. Second operand 11 states. [2020-09-25 08:53:46,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:46,033 INFO L93 Difference]: Finished difference Result 77 states and 104 transitions. [2020-09-25 08:53:46,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:53:46,034 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-09-25 08:53:46,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:46,036 INFO L225 Difference]: With dead ends: 77 [2020-09-25 08:53:46,036 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 08:53:46,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:53:46,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 08:53:46,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 56. [2020-09-25 08:53:46,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 08:53:46,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2020-09-25 08:53:46,048 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 53 [2020-09-25 08:53:46,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:46,049 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2020-09-25 08:53:46,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:53:46,049 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2020-09-25 08:53:46,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 08:53:46,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:46,050 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:46,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:53:46,051 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:46,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:46,051 INFO L82 PathProgramCache]: Analyzing trace with hash -154171110, now seen corresponding path program 4 times [2020-09-25 08:53:46,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:46,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422399067] [2020-09-25 08:53:46,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:46,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:51,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:51,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 08:53:51,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:53:51,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 08:53:51,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:51,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:53:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 08:53:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 08:53:51,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:51,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:51,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:51,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:51,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:51,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:51,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:51,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:51,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:51,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:51,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:51,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:51,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:51,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:51,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:51,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 08:53:51,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:53:51,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 763 [2020-09-25 08:53:51,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:51,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:51,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:53:51,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:51,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:53:51,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:51,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:51,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:51,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:51,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:51,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:51,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:53:51,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:51,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:53:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:51,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:51,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:51,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:51,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:51,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:53:51,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:51,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 08:53:51,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:51,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:51,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:51,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:51,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:53:51,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:52,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:52,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:52,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:52,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:52,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:53:52,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:52,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:52,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:53:52,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:52,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:52,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:52,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:52,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:52,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:52,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:53:52,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:52,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:52,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:52,102 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 08:53:52,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422399067] [2020-09-25 08:53:52,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:52,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 08:53:52,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137813795] [2020-09-25 08:53:52,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 08:53:52,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:52,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 08:53:52,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:53:52,105 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand 10 states. [2020-09-25 08:53:52,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:52,273 INFO L93 Difference]: Finished difference Result 85 states and 125 transitions. [2020-09-25 08:53:52,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 08:53:52,274 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-09-25 08:53:52,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:52,276 INFO L225 Difference]: With dead ends: 85 [2020-09-25 08:53:52,276 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 08:53:52,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-09-25 08:53:52,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 08:53:52,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 64. [2020-09-25 08:53:52,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 08:53:52,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 95 transitions. [2020-09-25 08:53:52,296 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 95 transitions. Word has length 52 [2020-09-25 08:53:52,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:52,297 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 95 transitions. [2020-09-25 08:53:52,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 08:53:52,297 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 95 transitions. [2020-09-25 08:53:52,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 08:53:52,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:52,298 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:52,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:53:52,301 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:52,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:52,302 INFO L82 PathProgramCache]: Analyzing trace with hash 10157787, now seen corresponding path program 5 times [2020-09-25 08:53:52,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:52,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230260598] [2020-09-25 08:53:52,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:52,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:53,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:57,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:57,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 08:53:57,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:53:57,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:53:57,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:57,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:57,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:57,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:57,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 08:53:57,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:57,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:57,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:57,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:57,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:57,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:57,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:57,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:57,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:57,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:57,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:57,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:57,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:57,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:57,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:58,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:53:58,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:53:58,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1469 [2020-09-25 08:53:58,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:58,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:58,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:58,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:58,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:53:58,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:58,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:58,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:58,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:58,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:58,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:53:58,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:58,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:58,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:58,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:58,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:59,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:59,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:53:59,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:59,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 08:53:59,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:59,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:53:59,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:59,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:59,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:59,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:59,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:59,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:59,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:53:59,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:59,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:59,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:59,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:59,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:59,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:59,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:59,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:59,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:59,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:53:59,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:59,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:59,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:59,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:59,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:59,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 19 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 08:53:59,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230260598] [2020-09-25 08:53:59,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:59,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:53:59,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253663928] [2020-09-25 08:53:59,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:53:59,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:59,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:53:59,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:53:59,112 INFO L87 Difference]: Start difference. First operand 64 states and 95 transitions. Second operand 9 states. [2020-09-25 08:53:59,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:59,207 INFO L93 Difference]: Finished difference Result 98 states and 168 transitions. [2020-09-25 08:53:59,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:53:59,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 08:53:59,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:59,210 INFO L225 Difference]: With dead ends: 98 [2020-09-25 08:53:59,210 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 08:53:59,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:53:59,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 08:53:59,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 62. [2020-09-25 08:53:59,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 08:53:59,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 89 transitions. [2020-09-25 08:53:59,223 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 89 transitions. Word has length 51 [2020-09-25 08:53:59,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:59,224 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 89 transitions. [2020-09-25 08:53:59,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:53:59,224 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 89 transitions. [2020-09-25 08:53:59,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 08:53:59,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:59,225 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:59,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:53:59,226 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:59,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:59,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1068467993, now seen corresponding path program 3 times [2020-09-25 08:53:59,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:59,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309994310] [2020-09-25 08:53:59,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:59,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:59,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:59,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:59,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:59,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:59,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:04,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 08:54:04,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 08:54:04,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:54:04,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:04,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:04,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:54:04,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:54:04,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 08:54:04,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:04,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:04,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:04,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:04,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:04,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:04,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:04,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:04,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:04,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:04,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:04,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:04,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:04,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:05,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:05,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:05,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:09,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:09,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:09,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:09,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:09,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 08:54:09,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 08:54:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:54:09,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:09,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:54:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:54:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 08:54:09,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:09,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:09,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:09,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:09,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:09,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:09,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:09,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:54:09,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:54:09,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 08:54:09,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:09,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:09,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:09,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:09,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 08:54:09,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:09,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:09,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:09,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:09,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:09,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:09,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:54:09,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:09,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:09,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:09,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:09,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:09,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:09,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:09,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:09,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:09,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:09,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:09,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:54:09,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:09,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:09,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:09,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:09,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:54:09,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:09,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 08:54:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:09,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:09,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:09,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:09,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:10,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:10,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:10,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:10,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:10,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:10,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking...