/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:58:13,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:58:13,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:58:13,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:58:13,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:58:13,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:58:13,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:58:13,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:58:13,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:58:13,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:58:13,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:58:13,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:58:13,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:58:13,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:58:13,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:58:13,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:58:13,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:58:13,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:58:13,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:58:13,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:58:13,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:58:13,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:58:13,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:58:13,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:58:13,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:58:13,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:58:13,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:58:13,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:58:13,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:58:13,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:58:13,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:58:13,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:58:13,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:58:13,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:58:13,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:58:13,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:58:13,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:58:13,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:58:13,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:58:13,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:58:13,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:58:13,410 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 [2020-10-13 08:58:13,435 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:58:13,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:58:13,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:58:13,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:58:13,437 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:58:13,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:58:13,438 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:58:13,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:58:13,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:58:13,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:58:13,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:58:13,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:58:13,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:58:13,439 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:58:13,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:58:13,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:58:13,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:58:13,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:58:13,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:58:13,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:58:13,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:58:13,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:58:13,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:58:13,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:58:13,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:58:13,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:58:13,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:58:13,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:58:13,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:58:13,442 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:58:13,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:58:13,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:58:13,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:58:13,778 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:58:13,779 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:58:13,779 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label08.c [2020-10-13 08:58:13,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8047ba80/6e8eb9e516134b51b10f544041edcb26/FLAG08dc0bfb9 [2020-10-13 08:58:14,560 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:58:14,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label08.c [2020-10-13 08:58:14,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8047ba80/6e8eb9e516134b51b10f544041edcb26/FLAG08dc0bfb9 [2020-10-13 08:58:14,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8047ba80/6e8eb9e516134b51b10f544041edcb26 [2020-10-13 08:58:14,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:58:14,687 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:58:14,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:58:14,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:58:14,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:58:14,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:58:14" (1/1) ... [2020-10-13 08:58:14,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b3326bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:14, skipping insertion in model container [2020-10-13 08:58:14,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:58:14" (1/1) ... [2020-10-13 08:58:14,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:58:14,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:58:15,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:58:16,000 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:58:16,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:58:16,315 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:58:16,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:16 WrapperNode [2020-10-13 08:58:16,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:58:16,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:58:16,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:58:16,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:58:16,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:16" (1/1) ... [2020-10-13 08:58:16,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:16" (1/1) ... [2020-10-13 08:58:16,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:16" (1/1) ... [2020-10-13 08:58:16,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:16" (1/1) ... [2020-10-13 08:58:16,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:16" (1/1) ... [2020-10-13 08:58:16,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:16" (1/1) ... [2020-10-13 08:58:16,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:16" (1/1) ... [2020-10-13 08:58:16,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:58:16,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:58:16,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:58:16,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:58:16,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:16" (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 [2020-10-13 08:58:16,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:58:16,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:58:16,642 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:58:16,643 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:58:16,643 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:58:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:58:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:58:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:58:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:58:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:58:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:58:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:58:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:58:22,506 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:58:22,506 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:58:22,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:58:22 BoogieIcfgContainer [2020-10-13 08:58:22,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:58:22,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:58:22,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:58:22,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:58:22,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:58:14" (1/3) ... [2020-10-13 08:58:22,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abd3b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:58:22, skipping insertion in model container [2020-10-13 08:58:22,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:58:16" (2/3) ... [2020-10-13 08:58:22,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abd3b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:58:22, skipping insertion in model container [2020-10-13 08:58:22,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:58:22" (3/3) ... [2020-10-13 08:58:22,539 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label08.c [2020-10-13 08:58:22,552 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:58:22,565 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:58:22,581 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:58:22,616 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:58:22,616 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:58:22,617 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:58:22,617 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:58:22,617 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:58:22,617 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:58:22,617 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:58:22,617 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:58:22,644 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 08:58:22,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 08:58:22,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:22,656 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:58:22,656 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:22,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:22,665 INFO L82 PathProgramCache]: Analyzing trace with hash 192141165, now seen corresponding path program 1 times [2020-10-13 08:58:22,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:22,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480422577] [2020-10-13 08:58:22,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:22,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:23,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:23,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 08:58:23,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:23,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-13 08:58:23,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:58:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:58:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 08:58:23,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:58:23,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:23,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:23,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:23,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:23,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:23,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:58:23,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:23,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:23,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:23,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:58:23,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:23,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480422577] [2020-10-13 08:58:23,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:58:23,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:58:23,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556161360] [2020-10-13 08:58:23,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:58:23,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:23,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:58:23,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:58:23,588 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 08:58:30,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:30,466 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-13 08:58:30,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:30,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-13 08:58:30,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:30,493 INFO L225 Difference]: With dead ends: 1199 [2020-10-13 08:58:30,493 INFO L226 Difference]: Without dead ends: 697 [2020-10-13 08:58:30,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:30,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-13 08:58:30,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-13 08:58:30,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 08:58:30,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-13 08:58:30,613 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 57 [2020-10-13 08:58:30,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:30,614 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-13 08:58:30,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:58:30,614 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-13 08:58:30,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 08:58:30,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:30,621 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2020-10-13 08:58:30,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:58:30,622 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:30,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:30,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1704640918, now seen corresponding path program 1 times [2020-10-13 08:58:30,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:30,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409979949] [2020-10-13 08:58:30,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:30,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:31,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:31,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:32,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:32,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 08:58:32,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:58:32,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2303 [2020-10-13 08:58:32,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:58:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:58:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 08:58:32,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:58:33,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:33,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:33,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:33,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:33,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:33,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:58:33,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:33,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:33,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:33,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:33,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:33,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:33,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:33,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:58:33,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:33,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 08:58:33,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:33,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:58:33,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:33,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409979949] [2020-10-13 08:58:33,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:33,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:58:33,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484736561] [2020-10-13 08:58:33,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:58:33,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:33,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:58:33,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:58:33,490 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 8 states. [2020-10-13 08:58:42,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:42,030 INFO L93 Difference]: Finished difference Result 1507 states and 2170 transitions. [2020-10-13 08:58:42,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:58:42,035 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-10-13 08:58:42,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:42,042 INFO L225 Difference]: With dead ends: 1507 [2020-10-13 08:58:42,042 INFO L226 Difference]: Without dead ends: 695 [2020-10-13 08:58:42,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:58:42,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-13 08:58:42,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 691. [2020-10-13 08:58:42,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 08:58:42,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 929 transitions. [2020-10-13 08:58:42,085 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 929 transitions. Word has length 126 [2020-10-13 08:58:42,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:42,086 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 929 transitions. [2020-10-13 08:58:42,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:58:42,086 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 929 transitions. [2020-10-13 08:58:42,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-13 08:58:42,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:42,090 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:58:42,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:58:42,090 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:42,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:42,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1712990111, now seen corresponding path program 1 times [2020-10-13 08:58:42,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:42,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664042881] [2020-10-13 08:58:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:42,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:42,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:43,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:43,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 08:58:43,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:58:43,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1322 [2020-10-13 08:58:43,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:43,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:43,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:58:43,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 08:58:43,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:58:43,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:43,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:43,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:43,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:43,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:43,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:58:43,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:43,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:58:43,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:43,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:43,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:43,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:58:43,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:43,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 08:58:43,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:58:43,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:43,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664042881] [2020-10-13 08:58:43,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:43,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:43,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857172641] [2020-10-13 08:58:43,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:43,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:43,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:43,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:43,763 INFO L87 Difference]: Start difference. First operand 691 states and 929 transitions. Second operand 5 states. [2020-10-13 08:58:51,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:51,873 INFO L93 Difference]: Finished difference Result 2014 states and 2729 transitions. [2020-10-13 08:58:51,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:51,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-13 08:58:51,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:51,896 INFO L225 Difference]: With dead ends: 2014 [2020-10-13 08:58:51,896 INFO L226 Difference]: Without dead ends: 1329 [2020-10-13 08:58:51,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:58:51,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2020-10-13 08:58:51,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1321. [2020-10-13 08:58:51,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1321 states. [2020-10-13 08:58:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1667 transitions. [2020-10-13 08:58:51,967 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1667 transitions. Word has length 137 [2020-10-13 08:58:51,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:51,968 INFO L479 AbstractCegarLoop]: Abstraction has 1321 states and 1667 transitions. [2020-10-13 08:58:51,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:51,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1667 transitions. [2020-10-13 08:58:51,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 08:58:51,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:51,980 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:58:51,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:58:51,981 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:51,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:51,981 INFO L82 PathProgramCache]: Analyzing trace with hash -709262063, now seen corresponding path program 1 times [2020-10-13 08:58:51,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:51,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393371743] [2020-10-13 08:58:51,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:52,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:52,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:52,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:52,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 08:58:52,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:58:52,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-10-13 08:58:52,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:52,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 08:58:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 08:58:52,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:53,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:53,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:53,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:53,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:53,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:53,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:58:53,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:53,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:53,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:53,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:53,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:53,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:53,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 08:58:53,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:53,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 08:58:53,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:53,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 08:58:53,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:58:53,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393371743] [2020-10-13 08:58:53,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:53,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:53,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894006402] [2020-10-13 08:58:53,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:53,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:53,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:53,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:53,291 INFO L87 Difference]: Start difference. First operand 1321 states and 1667 transitions. Second operand 5 states. [2020-10-13 08:59:01,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:01,938 INFO L93 Difference]: Finished difference Result 3899 states and 4973 transitions. [2020-10-13 08:59:01,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:01,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-13 08:59:01,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:01,956 INFO L225 Difference]: With dead ends: 3899 [2020-10-13 08:59:01,956 INFO L226 Difference]: Without dead ends: 2584 [2020-10-13 08:59:01,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:01,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2020-10-13 08:59:02,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 2570. [2020-10-13 08:59:02,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2570 states. [2020-10-13 08:59:02,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 3122 transitions. [2020-10-13 08:59:02,039 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 3122 transitions. Word has length 142 [2020-10-13 08:59:02,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:02,040 INFO L479 AbstractCegarLoop]: Abstraction has 2570 states and 3122 transitions. [2020-10-13 08:59:02,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:02,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 3122 transitions. [2020-10-13 08:59:02,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-13 08:59:02,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:02,043 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:59:02,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:59:02,044 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:02,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:02,044 INFO L82 PathProgramCache]: Analyzing trace with hash -327266707, now seen corresponding path program 1 times [2020-10-13 08:59:02,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:02,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703757429] [2020-10-13 08:59:02,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:02,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:02,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:02,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:03,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:03,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 08:59:03,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:59:03,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1766 [2020-10-13 08:59:03,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 08:59:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:59:03,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:03,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:03,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:03,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:03,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:03,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:03,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:59:03,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:03,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:03,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:03,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:03,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:03,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:03,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:04,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:04,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:59:04,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:04,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 08:59:04,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:59:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:59:04,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:59:04,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703757429] [2020-10-13 08:59:04,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:59:04,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:59:04,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816035318] [2020-10-13 08:59:04,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:59:04,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:04,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:59:04,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:59:04,102 INFO L87 Difference]: Start difference. First operand 2570 states and 3122 transitions. Second operand 5 states. [2020-10-13 08:59:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:11,018 INFO L93 Difference]: Finished difference Result 6398 states and 7905 transitions. [2020-10-13 08:59:11,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:11,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-13 08:59:11,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:11,042 INFO L225 Difference]: With dead ends: 6398 [2020-10-13 08:59:11,042 INFO L226 Difference]: Without dead ends: 3834 [2020-10-13 08:59:11,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:11,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2020-10-13 08:59:11,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 3818. [2020-10-13 08:59:11,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3818 states. [2020-10-13 08:59:11,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 4683 transitions. [2020-10-13 08:59:11,153 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 4683 transitions. Word has length 143 [2020-10-13 08:59:11,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:11,153 INFO L479 AbstractCegarLoop]: Abstraction has 3818 states and 4683 transitions. [2020-10-13 08:59:11,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:11,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 4683 transitions. [2020-10-13 08:59:11,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-13 08:59:11,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:11,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:59:11,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:59:11,156 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:11,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:11,157 INFO L82 PathProgramCache]: Analyzing trace with hash -286591957, now seen corresponding path program 1 times [2020-10-13 08:59:11,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:11,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300215558] [2020-10-13 08:59:11,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:11,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:11,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:11,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:11,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 08:59:11,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:59:11,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 810 [2020-10-13 08:59:11,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 08:59:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:59:12,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:12,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:12,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:12,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:12,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:12,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:12,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:59:12,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:12,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:12,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:12,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:12,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:12,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:12,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:12,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:59:12,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:12,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 08:59:12,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 08:59:12,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:59:12,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300215558] [2020-10-13 08:59:12,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:12,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:59:12,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938706057] [2020-10-13 08:59:12,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:59:12,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:12,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:59:12,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:59:12,276 INFO L87 Difference]: Start difference. First operand 3818 states and 4683 transitions. Second operand 5 states. [2020-10-13 08:59:19,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:19,246 INFO L93 Difference]: Finished difference Result 9519 states and 11950 transitions. [2020-10-13 08:59:19,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:19,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-13 08:59:19,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:19,282 INFO L225 Difference]: With dead ends: 9519 [2020-10-13 08:59:19,283 INFO L226 Difference]: Without dead ends: 5707 [2020-10-13 08:59:19,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:19,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2020-10-13 08:59:19,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 5693. [2020-10-13 08:59:19,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5693 states. [2020-10-13 08:59:19,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5693 states to 5693 states and 7068 transitions. [2020-10-13 08:59:19,447 INFO L78 Accepts]: Start accepts. Automaton has 5693 states and 7068 transitions. Word has length 143 [2020-10-13 08:59:19,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:19,448 INFO L479 AbstractCegarLoop]: Abstraction has 5693 states and 7068 transitions. [2020-10-13 08:59:19,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:19,448 INFO L276 IsEmpty]: Start isEmpty. Operand 5693 states and 7068 transitions. [2020-10-13 08:59:19,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 08:59:19,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:19,451 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2020-10-13 08:59:19,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:59:19,452 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:19,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:19,452 INFO L82 PathProgramCache]: Analyzing trace with hash 804468507, now seen corresponding path program 1 times [2020-10-13 08:59:19,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:19,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58802465] [2020-10-13 08:59:19,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:19,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:19,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:20,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:20,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:59:20,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:59:20,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 845 [2020-10-13 08:59:20,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 08:59:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 08:59:20,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:20,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:20,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:20,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:20,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:20,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:20,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:59:20,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:20,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:20,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:20,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:20,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:20,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:20,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:20,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:20,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 08:59:20,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:20,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 08:59:20,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:20,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:20,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:20,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 08:59:20,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:59:20,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58802465] [2020-10-13 08:59:20,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:20,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:59:20,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126903325] [2020-10-13 08:59:20,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:59:20,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:20,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:59:20,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:59:20,618 INFO L87 Difference]: Start difference. First operand 5693 states and 7068 transitions. Second operand 5 states. [2020-10-13 08:59:29,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:29,112 INFO L93 Difference]: Finished difference Result 14482 states and 18642 transitions. [2020-10-13 08:59:29,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:29,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-13 08:59:29,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:29,156 INFO L225 Difference]: With dead ends: 14482 [2020-10-13 08:59:29,156 INFO L226 Difference]: Without dead ends: 8795 [2020-10-13 08:59:29,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:29,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8795 states. [2020-10-13 08:59:29,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8795 to 8791. [2020-10-13 08:59:29,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8791 states. [2020-10-13 08:59:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8791 states to 8791 states and 11307 transitions. [2020-10-13 08:59:29,431 INFO L78 Accepts]: Start accepts. Automaton has 8791 states and 11307 transitions. Word has length 156 [2020-10-13 08:59:29,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:29,432 INFO L479 AbstractCegarLoop]: Abstraction has 8791 states and 11307 transitions. [2020-10-13 08:59:29,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:29,432 INFO L276 IsEmpty]: Start isEmpty. Operand 8791 states and 11307 transitions. [2020-10-13 08:59:29,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 08:59:29,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:29,436 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2020-10-13 08:59:29,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:59:29,437 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:29,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:29,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1126651491, now seen corresponding path program 1 times [2020-10-13 08:59:29,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:29,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891470657] [2020-10-13 08:59:29,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:29,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:29,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:30,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:30,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 08:59:30,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:59:30,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 903 [2020-10-13 08:59:30,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 08:59:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 08:59:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:30,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:30,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:30,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:30,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:30,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:30,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:59:30,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:30,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:30,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:30,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:30,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:30,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:30,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:59:30,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:30,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 08:59:30,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:30,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:30,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:30,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:59:30,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:30,681 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:59:30,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891470657] [2020-10-13 08:59:30,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:30,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:59:30,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729438691] [2020-10-13 08:59:30,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:59:30,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:30,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:59:30,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:59:30,686 INFO L87 Difference]: Start difference. First operand 8791 states and 11307 transitions. Second operand 5 states. [2020-10-13 08:59:41,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:41,529 INFO L93 Difference]: Finished difference Result 20365 states and 26836 transitions. [2020-10-13 08:59:41,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:41,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-13 08:59:41,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:41,579 INFO L225 Difference]: With dead ends: 20365 [2020-10-13 08:59:41,579 INFO L226 Difference]: Without dead ends: 11580 [2020-10-13 08:59:41,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:41,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11580 states. [2020-10-13 08:59:41,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11580 to 11572. [2020-10-13 08:59:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11572 states. [2020-10-13 08:59:41,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11572 states to 11572 states and 14472 transitions. [2020-10-13 08:59:41,911 INFO L78 Accepts]: Start accepts. Automaton has 11572 states and 14472 transitions. Word has length 160 [2020-10-13 08:59:41,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:41,912 INFO L479 AbstractCegarLoop]: Abstraction has 11572 states and 14472 transitions. [2020-10-13 08:59:41,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:41,912 INFO L276 IsEmpty]: Start isEmpty. Operand 11572 states and 14472 transitions. [2020-10-13 08:59:41,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-10-13 08:59:41,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:41,926 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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] [2020-10-13 08:59:41,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:59:41,927 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:41,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:41,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1461809214, now seen corresponding path program 1 times [2020-10-13 08:59:41,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:41,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565205021] [2020-10-13 08:59:41,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:42,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:42,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:43,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:45,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:47,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:47,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-10-13 08:59:47,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:59:47,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-13 08:59:47,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:47,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:47,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-13 08:59:47,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 08:59:47,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:47,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:47,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:47,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:47,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:47,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:47,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:59:47,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:47,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:47,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:47,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:47,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:59:47,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:47,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:47,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:47,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-13 08:59:47,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:47,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 08:59:47,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:47,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:47,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:47,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-13 08:59:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:47,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:47,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:47,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 08:59:47,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:47,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 08:59:47,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:47,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 08:59:47,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-13 08:59:48,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565205021] [2020-10-13 08:59:48,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:48,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:59:48,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382411219] [2020-10-13 08:59:48,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:59:48,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:48,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:59:48,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:59:48,141 INFO L87 Difference]: Start difference. First operand 11572 states and 14472 transitions. Second operand 5 states. [2020-10-13 08:59:55,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:55,235 INFO L93 Difference]: Finished difference Result 23171 states and 29013 transitions. [2020-10-13 08:59:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:55,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 404 [2020-10-13 08:59:55,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:55,277 INFO L225 Difference]: With dead ends: 23171 [2020-10-13 08:59:55,278 INFO L226 Difference]: Without dead ends: 11576 [2020-10-13 08:59:55,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:55,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11576 states. [2020-10-13 08:59:55,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11576 to 11572. [2020-10-13 08:59:55,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11572 states. [2020-10-13 08:59:55,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11572 states to 11572 states and 14458 transitions. [2020-10-13 08:59:55,533 INFO L78 Accepts]: Start accepts. Automaton has 11572 states and 14458 transitions. Word has length 404 [2020-10-13 08:59:55,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:55,535 INFO L479 AbstractCegarLoop]: Abstraction has 11572 states and 14458 transitions. [2020-10-13 08:59:55,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:55,535 INFO L276 IsEmpty]: Start isEmpty. Operand 11572 states and 14458 transitions. [2020-10-13 08:59:55,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-13 08:59:55,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:55,558 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:59:55,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:59:55,558 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:55,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:55,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1776258599, now seen corresponding path program 1 times [2020-10-13 08:59:55,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:55,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577933287] [2020-10-13 08:59:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:55,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:55,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:56,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:00,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:00,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 451 [2020-10-13 09:00:00,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:00:00,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 09:00:00,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:00,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:00,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:00:00,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:00:00,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:00,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:00,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:00,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:00,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:00,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:00,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:00:00,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:00,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:00,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:00,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:00,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:00,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:00:00,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:00,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 09:00:00,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:00,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:00,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:00,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:00:00,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:01,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:00:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:01,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:01,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:01,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:00:01,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:01,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-13 09:00:01,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:01,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:01,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:00:01,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:00:01,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:01,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 09:00:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:01,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:01,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:01,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:00:01,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:00:01,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:00:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:01,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 231 proven. 79 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-13 09:00:01,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577933287] [2020-10-13 09:00:01,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:01,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:00:01,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928235007] [2020-10-13 09:00:01,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:00:01,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:01,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:00:01,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:00:01,644 INFO L87 Difference]: Start difference. First operand 11572 states and 14458 transitions. Second operand 7 states. [2020-10-13 09:00:08,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:08,704 INFO L93 Difference]: Finished difference Result 23264 states and 29462 transitions. [2020-10-13 09:00:08,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:00:08,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 437 [2020-10-13 09:00:08,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:08,757 INFO L225 Difference]: With dead ends: 23264 [2020-10-13 09:00:08,758 INFO L226 Difference]: Without dead ends: 11698 [2020-10-13 09:00:08,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:00:08,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11698 states. [2020-10-13 09:00:09,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11698 to 11668. [2020-10-13 09:00:09,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11668 states. [2020-10-13 09:00:09,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11668 states to 11668 states and 14063 transitions. [2020-10-13 09:00:09,085 INFO L78 Accepts]: Start accepts. Automaton has 11668 states and 14063 transitions. Word has length 437 [2020-10-13 09:00:09,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:09,087 INFO L479 AbstractCegarLoop]: Abstraction has 11668 states and 14063 transitions. [2020-10-13 09:00:09,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:00:09,087 INFO L276 IsEmpty]: Start isEmpty. Operand 11668 states and 14063 transitions. [2020-10-13 09:00:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-10-13 09:00:09,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:09,111 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:00:09,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:00:09,112 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:09,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:09,112 INFO L82 PathProgramCache]: Analyzing trace with hash -493946832, now seen corresponding path program 1 times [2020-10-13 09:00:09,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:09,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120894468] [2020-10-13 09:00:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:09,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:09,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:09,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:11,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:11,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:12,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:14,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:14,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-13 09:00:14,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:00:14,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 09:00:14,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:14,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:00:14,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-13 09:00:14,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:00:14,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:14,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:14,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:14,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:14,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:14,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:14,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:00:14,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:14,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:14,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:14,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:14,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:14,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:14,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:14,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:14,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:00:14,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:14,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-13 09:00:14,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-13 09:00:14,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:14,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:00:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:14,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:14,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:15,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:15,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:00:15,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:00:15,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-13 09:00:15,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:00:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:00:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:00:15,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:15,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-13 09:00:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:15,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:15,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:15,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:00:15,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:15,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:00:15,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:15,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 09:00:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:15,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:15,884 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 234 proven. 82 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 09:00:15,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120894468] [2020-10-13 09:00:15,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:15,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:00:15,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275477691] [2020-10-13 09:00:15,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:00:15,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:15,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:00:15,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:00:15,887 INFO L87 Difference]: Start difference. First operand 11668 states and 14063 transitions. Second operand 10 states. [2020-10-13 09:00:16,131 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-13 09:00:16,491 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-13 09:00:16,728 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-10-13 09:00:16,900 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-10-13 09:00:18,236 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2020-10-13 09:00:18,663 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-10-13 09:00:18,922 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-10-13 09:00:22,183 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-10-13 09:00:29,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:29,420 INFO L93 Difference]: Finished difference Result 23504 states and 28425 transitions. [2020-10-13 09:00:29,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 09:00:29,422 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 467 [2020-10-13 09:00:29,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:29,468 INFO L225 Difference]: With dead ends: 23504 [2020-10-13 09:00:29,468 INFO L226 Difference]: Without dead ends: 11745 [2020-10-13 09:00:29,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-10-13 09:00:29,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11745 states. [2020-10-13 09:00:29,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11745 to 11680. [2020-10-13 09:00:29,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11680 states. [2020-10-13 09:00:29,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11680 states to 11680 states and 14056 transitions. [2020-10-13 09:00:29,821 INFO L78 Accepts]: Start accepts. Automaton has 11680 states and 14056 transitions. Word has length 467 [2020-10-13 09:00:29,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:29,823 INFO L479 AbstractCegarLoop]: Abstraction has 11680 states and 14056 transitions. [2020-10-13 09:00:29,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:00:29,823 INFO L276 IsEmpty]: Start isEmpty. Operand 11680 states and 14056 transitions. [2020-10-13 09:00:29,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-10-13 09:00:29,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:29,847 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:00:29,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:00:29,848 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:29,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:29,848 INFO L82 PathProgramCache]: Analyzing trace with hash 698695934, now seen corresponding path program 1 times [2020-10-13 09:00:29,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:29,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122049617] [2020-10-13 09:00:29,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:30,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:30,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:30,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:34,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:35,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:35,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 509 [2020-10-13 09:00:35,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:00:35,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-13 09:00:35,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:35,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:35,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 452 [2020-10-13 09:00:35,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 09:00:35,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:35,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:35,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:35,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:35,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:35,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:00:35,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:35,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:35,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:35,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:35,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:00:35,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:35,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:00:35,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:35,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:35,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:35,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:35,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:35,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:00:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:35,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:35,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:35,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:00:35,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:35,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:00:35,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:35,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:35,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:35,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:35,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:35,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:00:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:35,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:35,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:35,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 09:00:35,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:35,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:00:35,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:35,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:35,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:35,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-13 09:00:35,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-13 09:00:35,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122049617] [2020-10-13 09:00:35,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:35,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:00:35,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064988319] [2020-10-13 09:00:35,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:00:35,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:35,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:00:35,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:00:35,581 INFO L87 Difference]: Start difference. First operand 11680 states and 14056 transitions. Second operand 5 states. [2020-10-13 09:00:51,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:51,657 INFO L93 Difference]: Finished difference Result 25872 states and 31368 transitions. [2020-10-13 09:00:51,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:00:51,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 495 [2020-10-13 09:00:51,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:51,704 INFO L225 Difference]: With dead ends: 25872 [2020-10-13 09:00:51,704 INFO L226 Difference]: Without dead ends: 14198 [2020-10-13 09:00:51,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:00:51,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14198 states. [2020-10-13 09:00:51,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14198 to 14187. [2020-10-13 09:00:51,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14187 states. [2020-10-13 09:00:51,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14187 states to 14187 states and 17038 transitions. [2020-10-13 09:00:51,976 INFO L78 Accepts]: Start accepts. Automaton has 14187 states and 17038 transitions. Word has length 495 [2020-10-13 09:00:51,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:51,977 INFO L479 AbstractCegarLoop]: Abstraction has 14187 states and 17038 transitions. [2020-10-13 09:00:51,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:00:51,977 INFO L276 IsEmpty]: Start isEmpty. Operand 14187 states and 17038 transitions. [2020-10-13 09:00:52,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2020-10-13 09:00:52,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:52,001 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2020-10-13 09:00:52,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:00:52,002 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:52,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:52,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1724372351, now seen corresponding path program 1 times [2020-10-13 09:00:52,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:52,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53979154] [2020-10-13 09:00:52,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:52,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:52,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:52,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:56,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:57,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:57,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-13 09:00:57,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:00:57,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 09:00:57,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 475 [2020-10-13 09:00:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 09:00:57,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:57,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:57,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:57,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:57,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:57,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:57,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:00:57,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:57,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:57,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:57,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:57,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:57,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:57,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:00:57,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:57,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:00:57,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:57,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:57,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:57,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:57,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:57,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:00:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:57,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:57,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:57,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:00:57,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:57,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:00:57,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:57,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:57,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:00:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:57,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:57,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:57,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:00:57,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:57,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:00:57,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:57,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:57,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:57,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 09:00:57,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:57,708 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2020-10-13 09:00:57,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53979154] [2020-10-13 09:00:57,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:57,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:00:57,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457031071] [2020-10-13 09:00:57,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:00:57,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:57,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:00:57,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:00:57,710 INFO L87 Difference]: Start difference. First operand 14187 states and 17038 transitions. Second operand 5 states. [2020-10-13 09:01:05,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:05,657 INFO L93 Difference]: Finished difference Result 33030 states and 40397 transitions. [2020-10-13 09:01:05,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:01:05,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 518 [2020-10-13 09:01:05,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:05,724 INFO L225 Difference]: With dead ends: 33030 [2020-10-13 09:01:05,724 INFO L226 Difference]: Without dead ends: 18849 [2020-10-13 09:01:05,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:01:05,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18849 states. [2020-10-13 09:01:06,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18849 to 18835. [2020-10-13 09:01:06,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18835 states. [2020-10-13 09:01:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18835 states to 18835 states and 22799 transitions. [2020-10-13 09:01:06,122 INFO L78 Accepts]: Start accepts. Automaton has 18835 states and 22799 transitions. Word has length 518 [2020-10-13 09:01:06,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:06,123 INFO L479 AbstractCegarLoop]: Abstraction has 18835 states and 22799 transitions. [2020-10-13 09:01:06,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:01:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 18835 states and 22799 transitions. [2020-10-13 09:01:06,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-10-13 09:01:06,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:06,151 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2020-10-13 09:01:06,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:01:06,151 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:06,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:06,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1869712205, now seen corresponding path program 1 times [2020-10-13 09:01:06,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:06,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303483230] [2020-10-13 09:01:06,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:06,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:06,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:06,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:11,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:11,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:11,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 538 [2020-10-13 09:01:11,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:01:11,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 09:01:11,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:11,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:11,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 481 [2020-10-13 09:01:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 09:01:11,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:11,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:11,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:11,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:11,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:11,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:11,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:01:11,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:11,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:11,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:11,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:11,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:11,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:01:11,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:11,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:01:11,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:11,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:11,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:11,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:11,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:11,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:01:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:11,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:11,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:11,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:01:11,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:11,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:01:11,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:11,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:11,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:01:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:11,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:11,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:11,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-13 09:01:11,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:11,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:01:11,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:11,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:11,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:11,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-13 09:01:11,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:11,873 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2020-10-13 09:01:11,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303483230] [2020-10-13 09:01:11,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:11,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:01:11,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902561133] [2020-10-13 09:01:11,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:01:11,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:11,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:01:11,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:11,876 INFO L87 Difference]: Start difference. First operand 18835 states and 22799 transitions. Second operand 5 states. [2020-10-13 09:01:23,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:23,147 INFO L93 Difference]: Finished difference Result 39865 states and 48533 transitions. [2020-10-13 09:01:23,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:01:23,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 524 [2020-10-13 09:01:23,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:23,202 INFO L225 Difference]: With dead ends: 39865 [2020-10-13 09:01:23,203 INFO L226 Difference]: Without dead ends: 21036 [2020-10-13 09:01:23,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:01:23,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21036 states. [2020-10-13 09:01:23,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21036 to 21020. [2020-10-13 09:01:23,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21020 states. [2020-10-13 09:01:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21020 states to 21020 states and 25432 transitions. [2020-10-13 09:01:23,653 INFO L78 Accepts]: Start accepts. Automaton has 21020 states and 25432 transitions. Word has length 524 [2020-10-13 09:01:23,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:23,654 INFO L479 AbstractCegarLoop]: Abstraction has 21020 states and 25432 transitions. [2020-10-13 09:01:23,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:01:23,655 INFO L276 IsEmpty]: Start isEmpty. Operand 21020 states and 25432 transitions. [2020-10-13 09:01:23,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2020-10-13 09:01:23,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:23,683 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2020-10-13 09:01:23,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:01:23,683 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:23,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:23,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1185428783, now seen corresponding path program 1 times [2020-10-13 09:01:23,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:23,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379496103] [2020-10-13 09:01:23,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:23,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:23,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:24,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:26,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:28,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:28,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 569 [2020-10-13 09:01:28,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:01:28,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 09:01:28,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-13 09:01:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:01:28,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:28,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:28,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:28,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:28,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:28,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:01:28,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:28,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:28,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:28,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:28,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:28,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:01:28,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:28,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:01:28,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:28,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:28,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:01:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:28,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:29,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:29,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:01:29,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:29,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:01:29,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:29,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:29,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:01:29,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:29,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:01:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:29,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:29,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:29,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:01:29,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:29,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:01:29,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:29,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:29,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:01:29,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:01:29,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:29,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-13 09:01:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:29,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:29,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:29,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:01:29,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:29,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:01:29,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:29,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:29,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 09:01:29,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:29,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 365 proven. 78 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2020-10-13 09:01:29,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379496103] [2020-10-13 09:01:29,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:29,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:01:29,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515367822] [2020-10-13 09:01:29,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:01:29,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:29,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:01:29,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:01:29,411 INFO L87 Difference]: Start difference. First operand 21020 states and 25432 transitions. Second operand 7 states. [2020-10-13 09:01:39,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:39,060 INFO L93 Difference]: Finished difference Result 42285 states and 55537 transitions. [2020-10-13 09:01:39,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:01:39,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 553 [2020-10-13 09:01:39,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:39,148 INFO L225 Difference]: With dead ends: 42285 [2020-10-13 09:01:39,148 INFO L226 Difference]: Without dead ends: 21271 [2020-10-13 09:01:39,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:01:39,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21271 states. [2020-10-13 09:01:39,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21271 to 20794. [2020-10-13 09:01:39,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20794 states. [2020-10-13 09:01:39,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20794 states to 20794 states and 24485 transitions. [2020-10-13 09:01:39,842 INFO L78 Accepts]: Start accepts. Automaton has 20794 states and 24485 transitions. Word has length 553 [2020-10-13 09:01:39,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:39,844 INFO L479 AbstractCegarLoop]: Abstraction has 20794 states and 24485 transitions. [2020-10-13 09:01:39,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:01:39,844 INFO L276 IsEmpty]: Start isEmpty. Operand 20794 states and 24485 transitions. [2020-10-13 09:01:39,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2020-10-13 09:01:39,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:39,880 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:39,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:01:39,880 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:39,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:39,881 INFO L82 PathProgramCache]: Analyzing trace with hash -108047717, now seen corresponding path program 1 times [2020-10-13 09:01:39,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:39,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636132569] [2020-10-13 09:01:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:40,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:40,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:40,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:40,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:43,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:44,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:45,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:45,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-13 09:01:45,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:01:45,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 09:01:45,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:01:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 354 [2020-10-13 09:01:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:01:45,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:45,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:45,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:45,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:45,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:45,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:45,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:01:45,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:45,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:45,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:45,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:45,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:45,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:45,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:45,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:45,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-13 09:01:45,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:45,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:01:45,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:45,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:45,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:45,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:45,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:45,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-13 09:01:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:45,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:45,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:45,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:01:45,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:45,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:01:45,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:45,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:45,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:45,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:01:45,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:45,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-10-13 09:01:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:45,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:45,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:45,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:45,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:01:45,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:01:45,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-13 09:01:45,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:45,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:01:45,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:01:45,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:01:45,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:46,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-13 09:01:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:46,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:46,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:46,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:01:46,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:46,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:01:46,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 09:01:46,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:46,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 373 proven. 82 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-10-13 09:01:46,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636132569] [2020-10-13 09:01:46,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:46,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:01:46,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361211745] [2020-10-13 09:01:46,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:01:46,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:46,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:01:46,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:01:46,996 INFO L87 Difference]: Start difference. First operand 20794 states and 24485 transitions. Second operand 10 states. [2020-10-13 09:01:47,281 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-13 09:01:47,706 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-13 09:01:47,948 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-10-13 09:01:48,169 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2020-10-13 09:01:50,491 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2020-10-13 09:01:50,964 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-10-13 09:01:51,228 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-13 09:01:57,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:57,679 INFO L93 Difference]: Finished difference Result 40904 states and 48273 transitions. [2020-10-13 09:01:57,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 09:01:57,681 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 588 [2020-10-13 09:01:57,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:57,730 INFO L225 Difference]: With dead ends: 40904 [2020-10-13 09:01:57,730 INFO L226 Difference]: Without dead ends: 19944 [2020-10-13 09:01:57,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2020-10-13 09:01:57,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19944 states. [2020-10-13 09:01:58,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19944 to 19881. [2020-10-13 09:01:58,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19881 states. [2020-10-13 09:01:58,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19881 states to 19881 states and 23324 transitions. [2020-10-13 09:01:58,143 INFO L78 Accepts]: Start accepts. Automaton has 19881 states and 23324 transitions. Word has length 588 [2020-10-13 09:01:58,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:58,144 INFO L479 AbstractCegarLoop]: Abstraction has 19881 states and 23324 transitions. [2020-10-13 09:01:58,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:01:58,144 INFO L276 IsEmpty]: Start isEmpty. Operand 19881 states and 23324 transitions. [2020-10-13 09:01:58,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2020-10-13 09:01:58,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:58,167 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:58,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:01:58,167 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:58,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:58,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1190521807, now seen corresponding path program 1 times [2020-10-13 09:01:58,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:58,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438976593] [2020-10-13 09:01:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:58,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:58,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:58,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:58,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking...