/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=WIDEST --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_2calls_6-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:10:20,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:10:20,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:10:20,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:10:20,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:10:20,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:10:20,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:10:20,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:10:20,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:10:20,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:10:20,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:10:20,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:10:20,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:10:20,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:10:20,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:10:20,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:10:20,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:10:20,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:10:20,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:10:20,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:10:20,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:10:20,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:10:20,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:10:20,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:10:20,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:10:20,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:10:20,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:10:20,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:10:20,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:10:20,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:10:20,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:10:20,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:10:20,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:10:20,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:10:20,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:10:20,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:10:20,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:10:20,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:10:20,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:10:20,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:10:20,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:10:20,462 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 03:10:20,518 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:10:20,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:10:20,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:10:20,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:10:20,521 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:10:20,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:10:20,522 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:10:20,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:10:20,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:10:20,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:10:20,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:10:20,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:10:20,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:10:20,525 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:10:20,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:10:20,525 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:10:20,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:10:20,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:10:20,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:10:20,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:10:20,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:10:20,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:10:20,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:10:20,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:10:20,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:10:20,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:10:20,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:10:20,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:10:20,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:10:20,528 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:10:20,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:10:21,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:10:21,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:10:21,018 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:10:21,018 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:10:21,020 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c [2020-09-25 03:10:21,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdce62d14/9d21046688a0419391f80148699d084b/FLAG062a9e322 [2020-09-25 03:10:21,628 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:10:21,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c [2020-09-25 03:10:21,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdce62d14/9d21046688a0419391f80148699d084b/FLAG062a9e322 [2020-09-25 03:10:21,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdce62d14/9d21046688a0419391f80148699d084b [2020-09-25 03:10:21,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:10:21,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:10:21,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:10:21,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:10:21,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:10:21,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:10:21" (1/1) ... [2020-09-25 03:10:22,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9103a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:21, skipping insertion in model container [2020-09-25 03:10:22,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:10:21" (1/1) ... [2020-09-25 03:10:22,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:10:22,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:10:22,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:10:22,258 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:10:22,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:10:22,299 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:10:22,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:22 WrapperNode [2020-09-25 03:10:22,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:10:22,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:10:22,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:10:22,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:10:22,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:22" (1/1) ... [2020-09-25 03:10:22,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:22" (1/1) ... [2020-09-25 03:10:22,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:22" (1/1) ... [2020-09-25 03:10:22,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:22" (1/1) ... [2020-09-25 03:10:22,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:22" (1/1) ... [2020-09-25 03:10:22,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:22" (1/1) ... [2020-09-25 03:10:22,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:22" (1/1) ... [2020-09-25 03:10:22,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:10:22,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:10:22,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:10:22,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:10:22,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:22" (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 03:10:22,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:10:22,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:10:22,495 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 03:10:22,495 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 03:10:22,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:10:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:10:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:10:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 03:10:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 03:10:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:10:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:10:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:10:22,734 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:10:22,734 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:10:22,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:10:22 BoogieIcfgContainer [2020-09-25 03:10:22,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:10:22,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:10:22,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:10:22,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:10:22,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:10:21" (1/3) ... [2020-09-25 03:10:22,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ddb516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:10:22, skipping insertion in model container [2020-09-25 03:10:22,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:22" (2/3) ... [2020-09-25 03:10:22,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ddb516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:10:22, skipping insertion in model container [2020-09-25 03:10:22,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:10:22" (3/3) ... [2020-09-25 03:10:22,750 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-2.c [2020-09-25 03:10:22,762 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:10:22,773 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:10:22,800 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:10:22,841 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:10:22,841 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:10:22,842 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:10:22,842 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:10:22,842 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:10:22,842 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:10:22,843 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:10:22,843 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:10:22,871 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 03:10:22,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 03:10:22,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:22,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:22,884 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:22,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:22,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 03:10:22,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:22,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079219680] [2020-09-25 03:10:22,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:23,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:23,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:10:23,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:23,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-09-25 03:10:23,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:23,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:23,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 03:10:23,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:23,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 03:10:23,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:23,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:23,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:23,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:23,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:10:23,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:23,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:23,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:23,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:23,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:23,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:23,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:23,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:23,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:10:23,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:23,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:23,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:23,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:23,441 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 03:10:23,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079219680] [2020-09-25 03:10:23,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:23,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:10:23,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039301217] [2020-09-25 03:10:23,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:10:23,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:23,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:10:23,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:10:23,471 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 03:10:23,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:23,583 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 03:10:23,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:10:23,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 03:10:23,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:23,600 INFO L225 Difference]: With dead ends: 58 [2020-09-25 03:10:23,600 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 03:10:23,605 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 03:10:23,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 03:10:23,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 03:10:23,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 03:10:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 03:10:23,663 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 03:10:23,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:23,664 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 03:10:23,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:10:23,664 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 03:10:23,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 03:10:23,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:23,667 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 03:10:23,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:10:23,668 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:23,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:23,668 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 03:10:23,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:23,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525815619] [2020-09-25 03:10:23,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:23,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:23,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:10:23,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:23,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 03:10:23,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:23,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:23,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:10:23,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:23,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:23,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:23,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:23,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:23,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:23,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:23,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:23,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:23,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:23,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:23,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:23,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 03:10:23,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:23,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:23,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:23,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:23,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:23,891 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 03:10:23,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525815619] [2020-09-25 03:10:23,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:23,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:10:23,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466592634] [2020-09-25 03:10:23,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:10:23,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:23,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:10:23,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:10:23,895 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 03:10:23,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:23,946 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 03:10:23,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:10:23,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 03:10:23,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:23,949 INFO L225 Difference]: With dead ends: 50 [2020-09-25 03:10:23,949 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 03:10:23,950 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 03:10:23,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 03:10:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 03:10:23,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 03:10:23,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 03:10:23,962 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 03:10:23,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:23,962 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 03:10:23,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:10:23,962 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 03:10:23,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:10:23,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:23,965 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1] [2020-09-25 03:10:23,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:10:23,966 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:23,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:23,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 03:10:23,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:23,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890275072] [2020-09-25 03:10:23,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:23,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:24,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:24,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:24,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:25,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:25,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:10:25,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:25,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1971 [2020-09-25 03:10:25,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:10:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:10:25,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:25,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:25,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:25,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:25,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:25,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:25,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:25,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:25,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:10:26,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:26,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:26,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:26,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:26,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:26,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:26,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-09-25 03:10:26,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 03:10:26,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:26,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:26,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:26,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:26,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:26,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:26,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:10:26,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:26,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:26,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:26,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:26,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:26,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:26,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:26,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:26,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 03:10:26,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:26,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:26,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:26,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:26,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 03:10:26,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890275072] [2020-09-25 03:10:26,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:26,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:10:26,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759755867] [2020-09-25 03:10:26,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:10:26,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:26,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:10:26,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:10:26,525 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-09-25 03:10:26,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:26,643 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-09-25 03:10:26,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:10:26,644 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 03:10:26,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:26,647 INFO L225 Difference]: With dead ends: 63 [2020-09-25 03:10:26,647 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 03:10:26,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:10:26,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 03:10:26,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-09-25 03:10:26,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 03:10:26,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 03:10:26,660 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 03:10:26,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:26,660 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 03:10:26,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:10:26,661 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 03:10:26,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:10:26,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:26,663 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:26,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:10:26,664 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:26,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:26,664 INFO L82 PathProgramCache]: Analyzing trace with hash -159162515, now seen corresponding path program 1 times [2020-09-25 03:10:26,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:26,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126579201] [2020-09-25 03:10:26,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:26,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:26,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:26,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:26,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:26,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:27,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:30,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:10:30,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:10:30,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3464 [2020-09-25 03:10:30,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:30,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:10:30,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:10:30,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:30,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:30,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:30,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:30,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:10:30,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:30,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:30,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:10:30,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:31,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:31,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:31,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 957 [2020-09-25 03:10:31,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:31,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:31,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:31,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:10:31,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:31,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:31,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:31,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:31,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:31,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:10:31,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:31,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:31,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:31,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:31,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:31,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:31,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:31,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:31,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:31,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 03:10:31,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:31,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:31,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:31,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:31,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:10:31,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126579201] [2020-09-25 03:10:31,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:31,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:10:31,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036941206] [2020-09-25 03:10:31,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:10:31,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:31,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:10:31,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:10:31,320 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 03:10:31,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:31,506 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2020-09-25 03:10:31,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:10:31,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 03:10:31,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:31,516 INFO L225 Difference]: With dead ends: 67 [2020-09-25 03:10:31,516 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 03:10:31,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:10:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 03:10:31,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2020-09-25 03:10:31,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 03:10:31,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 03:10:31,542 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 34 [2020-09-25 03:10:31,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:31,543 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 03:10:31,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:10:31,543 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 03:10:31,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:10:31,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:31,551 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:31,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:10:31,551 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:31,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:31,552 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 2 times [2020-09-25 03:10:31,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:31,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201049201] [2020-09-25 03:10:31,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:31,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:32,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:10:32,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:32,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 961 [2020-09-25 03:10:32,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:32,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:32,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:32,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:10:32,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:32,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:32,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:32,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:32,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:32,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:32,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:32,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:32,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:32,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:32,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-25 03:10:32,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:32,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:32,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:32,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:32,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:32,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:32,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:32,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:32,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:10:32,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:32,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:32,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:32,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:32,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:32,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:32,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:10:32,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:32,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:10:32,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201049201] [2020-09-25 03:10:32,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:32,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:10:32,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660155779] [2020-09-25 03:10:32,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:10:32,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:32,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:10:32,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:10:32,892 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 03:10:33,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:33,018 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-09-25 03:10:33,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:10:33,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 03:10:33,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:33,030 INFO L225 Difference]: With dead ends: 64 [2020-09-25 03:10:33,031 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 03:10:33,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:10:33,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 03:10:33,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 03:10:33,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 03:10:33,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 03:10:33,041 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 34 [2020-09-25 03:10:33,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:33,042 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 03:10:33,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:10:33,042 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 03:10:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:10:33,043 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:33,044 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1] [2020-09-25 03:10:33,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:10:33,044 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:33,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:33,045 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 03:10:33,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:33,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210811295] [2020-09-25 03:10:33,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:33,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:34,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:10:34,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:10:34,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1605 [2020-09-25 03:10:34,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:34,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:34,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:10:34,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:10:34,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:34,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:34,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:34,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:34,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:34,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:34,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:34,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:34,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:34,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:34,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:35,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:35,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:10:35,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:35,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-09-25 03:10:35,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:35,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:35,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:35,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:35,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:35,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:35,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:35,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:35,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:35,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:35,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:10:35,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:35,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:35,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:35,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:35,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:35,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:35,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:35,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:10:35,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:35,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:35,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:35,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:35,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 03:10:35,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210811295] [2020-09-25 03:10:35,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:35,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:10:35,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074528813] [2020-09-25 03:10:35,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:10:35,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:35,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:10:35,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:10:35,249 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 8 states. [2020-09-25 03:10:35,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:35,340 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2020-09-25 03:10:35,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:10:35,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-25 03:10:35,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:35,342 INFO L225 Difference]: With dead ends: 78 [2020-09-25 03:10:35,343 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 03:10:35,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:10:35,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 03:10:35,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2020-09-25 03:10:35,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 03:10:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 03:10:35,353 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 35 [2020-09-25 03:10:35,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:35,353 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 03:10:35,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:10:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 03:10:35,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:10:35,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:35,356 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:35,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:10:35,356 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:35,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:35,357 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-25 03:10:35,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:35,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307560261] [2020-09-25 03:10:35,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:35,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:35,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:35,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:35,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:35,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:40,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:40,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:10:40,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:10:40,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:10:40,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:40,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:10:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:10:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:10:40,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:40,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:40,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:40,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:40,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:40,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:40,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:40,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:40,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:40,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:40,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:40,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:40,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:42,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:10:42,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:42,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1640 [2020-09-25 03:10:42,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:10:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:42,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 03:10:42,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:42,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:42,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:42,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:42,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:42,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:10:42,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:42,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:42,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:42,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:42,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:42,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:42,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:42,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:42,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:42,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 03:10:42,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:42,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:10:42,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:42,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:42,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:42,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:42,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:42,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:10:42,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:42,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:42,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:42,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:42,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:42,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:42,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:42,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:42,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:42,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:10:42,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:42,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:42,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:42,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:42,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:42,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 03:10:42,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307560261] [2020-09-25 03:10:42,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:42,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:10:42,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729432738] [2020-09-25 03:10:42,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:10:42,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:42,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:10:42,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:10:42,434 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 12 states. [2020-09-25 03:10:42,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:42,627 INFO L93 Difference]: Finished difference Result 94 states and 124 transitions. [2020-09-25 03:10:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:10:42,627 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-09-25 03:10:42,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:42,629 INFO L225 Difference]: With dead ends: 94 [2020-09-25 03:10:42,629 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 03:10:42,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:10:42,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 03:10:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 66. [2020-09-25 03:10:42,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 03:10:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 92 transitions. [2020-09-25 03:10:42,643 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 92 transitions. Word has length 51 [2020-09-25 03:10:42,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:42,644 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 92 transitions. [2020-09-25 03:10:42,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:10:42,644 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 92 transitions. [2020-09-25 03:10:42,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:10:42,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:42,646 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:42,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:10:42,646 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:42,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:42,647 INFO L82 PathProgramCache]: Analyzing trace with hash -991775051, now seen corresponding path program 1 times [2020-09-25 03:10:42,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:42,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271556054] [2020-09-25 03:10:42,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:42,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:44,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:44,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:47,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:47,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 03:10:47,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:10:47,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 03:10:47,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:47,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:10:47,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:10:47,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:10:47,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:47,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:47,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:47,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:47,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:47,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:47,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:47,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:47,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:47,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:47,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:47,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:47,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:47,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:47,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:47,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:47,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:51,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:51,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:10:51,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:10:51,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3595 [2020-09-25 03:10:51,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:10:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:10:51,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:51,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:51,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:51,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:51,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:51,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:51,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:10:51,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:51,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:51,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:51,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:51,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:51,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:51,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:51,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:51,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:51,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:52,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:52,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:52,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-09-25 03:10:52,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:52,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:52,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:52,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:52,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:52,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:52,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:10:52,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:52,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:52,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:52,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:52,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:52,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:52,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:52,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 03:10:52,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:52,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:52,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:52,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:52,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:52,225 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 03:10:52,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271556054] [2020-09-25 03:10:52,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:52,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:10:52,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542000298] [2020-09-25 03:10:52,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:10:52,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:52,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:10:52,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:10:52,229 INFO L87 Difference]: Start difference. First operand 66 states and 92 transitions. Second operand 12 states. [2020-09-25 03:10:52,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:52,426 INFO L93 Difference]: Finished difference Result 104 states and 145 transitions. [2020-09-25 03:10:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:10:52,428 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-25 03:10:52,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:52,429 INFO L225 Difference]: With dead ends: 104 [2020-09-25 03:10:52,429 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 03:10:52,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:10:52,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 03:10:52,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 76. [2020-09-25 03:10:52,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 03:10:52,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 113 transitions. [2020-09-25 03:10:52,457 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 113 transitions. Word has length 52 [2020-09-25 03:10:52,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:52,458 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 113 transitions. [2020-09-25 03:10:52,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:10:52,459 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 113 transitions. [2020-09-25 03:10:52,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:10:52,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:52,463 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:52,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:10:52,464 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:52,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:52,464 INFO L82 PathProgramCache]: Analyzing trace with hash -945821099, now seen corresponding path program 2 times [2020-09-25 03:10:52,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:52,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130064375] [2020-09-25 03:10:52,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:52,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:57,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 03:10:57,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:10:57,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 03:10:57,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:57,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:10:57,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:10:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:10:57,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:57,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:57,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:57,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:57,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:57,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:57,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:57,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:57,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:57,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:57,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:58,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:10:58,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:58,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 760 [2020-09-25 03:10:58,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:10:58,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:58,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:10:58,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:58,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:58,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:58,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:58,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:58,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:10:58,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:58,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:58,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:58,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:58,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:58,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:58,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 03:10:58,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:58,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:58,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:58,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:58,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:58,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:58,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:58,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:58,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:58,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:10:58,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:58,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:58,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:58,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:58,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:58,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:58,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:58,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:58,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:58,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:10:58,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:58,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:58,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:58,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:58,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:58,474 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 03:10:58,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130064375] [2020-09-25 03:10:58,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:58,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:10:58,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119295233] [2020-09-25 03:10:58,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:10:58,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:58,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:10:58,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:10:58,477 INFO L87 Difference]: Start difference. First operand 76 states and 113 transitions. Second operand 12 states. [2020-09-25 03:10:58,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:58,639 INFO L93 Difference]: Finished difference Result 114 states and 172 transitions. [2020-09-25 03:10:58,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:10:58,639 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-25 03:10:58,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:58,641 INFO L225 Difference]: With dead ends: 114 [2020-09-25 03:10:58,641 INFO L226 Difference]: Without dead ends: 108 [2020-09-25 03:10:58,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:10:58,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-25 03:10:58,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 78. [2020-09-25 03:10:58,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 03:10:58,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 119 transitions. [2020-09-25 03:10:58,655 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 119 transitions. Word has length 52 [2020-09-25 03:10:58,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:58,656 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 119 transitions. [2020-09-25 03:10:58,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:10:58,656 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 119 transitions. [2020-09-25 03:10:58,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:10:58,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:58,658 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:58,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:10:58,658 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:58,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:58,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1855729211, now seen corresponding path program 1 times [2020-09-25 03:10:58,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:58,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820838503] [2020-09-25 03:10:58,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:58,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:03,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 03:11:03,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:11:03,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 03:11:03,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:03,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:11:03,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:11:03,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 03:11:03,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:03,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:03,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:03,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:03,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:03,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:03,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:03,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:03,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:03,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:03,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:03,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:03,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:07,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:11:07,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:11:07,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4135 [2020-09-25 03:11:07,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:07,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:11:07,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:07,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:11:07,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:07,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:07,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:07,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:07,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:07,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:11:07,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:07,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:07,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:07,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:07,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:07,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:07,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:08,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:11:08,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:11:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-09-25 03:11:08,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:08,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:11:08,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:08,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:11:08,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:08,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:08,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:08,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:08,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:08,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:11:08,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:08,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:08,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:08,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:08,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:08,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:08,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:08,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:08,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:11:08,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:08,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:11:08,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:08,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:11:08,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 03:11:08,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820838503] [2020-09-25 03:11:08,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:08,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:11:08,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830645757] [2020-09-25 03:11:08,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:11:08,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:08,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:11:08,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:11:08,391 INFO L87 Difference]: Start difference. First operand 78 states and 119 transitions. Second operand 12 states. [2020-09-25 03:11:08,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:08,581 INFO L93 Difference]: Finished difference Result 112 states and 164 transitions. [2020-09-25 03:11:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:11:08,581 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-25 03:11:08,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:08,585 INFO L225 Difference]: With dead ends: 112 [2020-09-25 03:11:08,585 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 03:11:08,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:11:08,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 03:11:08,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 84. [2020-09-25 03:11:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 03:11:08,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 130 transitions. [2020-09-25 03:11:08,612 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 130 transitions. Word has length 53 [2020-09-25 03:11:08,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:08,612 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 130 transitions. [2020-09-25 03:11:08,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:11:08,612 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 130 transitions. [2020-09-25 03:11:08,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 03:11:08,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:08,617 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:08,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:11:08,617 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:08,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:08,618 INFO L82 PathProgramCache]: Analyzing trace with hash 698933285, now seen corresponding path program 1 times [2020-09-25 03:11:08,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:08,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996404157] [2020-09-25 03:11:08,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:08,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:13,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 03:11:13,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:11:13,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 03:11:13,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:13,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:11:13,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:11:13,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 03:11:13,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:13,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:13,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:13,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:13,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:13,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:13,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:13,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:13,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:13,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:16,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:11:16,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:11:16,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2822 [2020-09-25 03:11:16,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:11:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:11:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 03:11:16,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:16,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:16,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:16,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:16,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:16,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:11:16,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:16,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:11:16,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:16,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:11:16,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:16,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:16,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:17,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:17,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking...