/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/Problem03_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:25:15,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:25:15,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:25:15,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:25:15,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:25:15,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:25:15,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:25:15,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:25:15,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:25:15,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:25:15,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:25:15,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:25:15,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:25:15,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:25:15,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:25:15,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:25:15,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:25:15,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:25:15,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:25:15,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:25:15,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:25:15,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:25:15,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:25:15,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:25:15,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:25:15,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:25:15,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:25:15,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:25:15,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:25:15,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:25:15,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:25:15,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:25:15,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:25:15,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:25:15,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:25:15,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:25:15,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:25:15,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:25:15,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:25:15,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:25:15,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:25:15,536 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 06:25:15,558 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:25:15,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:25:15,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:25:15,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:25:15,560 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:25:15,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:25:15,561 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:25:15,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:25:15,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:25:15,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:25:15,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:25:15,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:25:15,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:25:15,562 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:25:15,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:25:15,562 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:25:15,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:25:15,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:25:15,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:25:15,563 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:25:15,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:25:15,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:25:15,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:25:15,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:25:15,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:25:15,565 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:25:15,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:25:15,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:25:15,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:25:15,565 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 06:25:15,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:25:15,869 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:25:15,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:25:15,882 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:25:15,883 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:25:15,883 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label45.c [2020-10-13 06:25:15,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02f51491a/051d775ef9364de3ba3c442429104ffb/FLAGea2eff512 [2020-10-13 06:25:16,585 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:25:16,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label45.c [2020-10-13 06:25:16,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02f51491a/051d775ef9364de3ba3c442429104ffb/FLAGea2eff512 [2020-10-13 06:25:16,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02f51491a/051d775ef9364de3ba3c442429104ffb [2020-10-13 06:25:16,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:25:16,719 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:25:16,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:25:16,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:25:16,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:25:16,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:25:16" (1/1) ... [2020-10-13 06:25:16,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c09893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:16, skipping insertion in model container [2020-10-13 06:25:16,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:25:16" (1/1) ... [2020-10-13 06:25:16,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:25:16,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:25:17,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:25:17,654 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:25:18,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:25:18,200 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:25:18,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:18 WrapperNode [2020-10-13 06:25:18,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:25:18,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:25:18,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:25:18,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:25:18,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:18" (1/1) ... [2020-10-13 06:25:18,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:18" (1/1) ... [2020-10-13 06:25:18,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:18" (1/1) ... [2020-10-13 06:25:18,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:18" (1/1) ... [2020-10-13 06:25:18,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:18" (1/1) ... [2020-10-13 06:25:18,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:18" (1/1) ... [2020-10-13 06:25:18,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:18" (1/1) ... [2020-10-13 06:25:18,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:25:18,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:25:18,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:25:18,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:25:18,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:18" (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 06:25:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:25:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:25:18,468 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:25:18,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:25:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:25:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:25:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:25:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:25:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:25:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:25:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:25:20,447 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:25:20,448 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:25:20,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:25:20 BoogieIcfgContainer [2020-10-13 06:25:20,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:25:20,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:25:20,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:25:20,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:25:20,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:25:16" (1/3) ... [2020-10-13 06:25:20,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2675b6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:25:20, skipping insertion in model container [2020-10-13 06:25:20,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:18" (2/3) ... [2020-10-13 06:25:20,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2675b6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:25:20, skipping insertion in model container [2020-10-13 06:25:20,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:25:20" (3/3) ... [2020-10-13 06:25:20,463 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label45.c [2020-10-13 06:25:20,476 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:25:20,485 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:25:20,501 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:25:20,530 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:25:20,530 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:25:20,530 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:25:20,531 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:25:20,531 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:25:20,531 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:25:20,531 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:25:20,531 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:25:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:25:20,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 06:25:20,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:20,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:25:20,571 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:20,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:20,577 INFO L82 PathProgramCache]: Analyzing trace with hash -148239995, now seen corresponding path program 1 times [2020-10-13 06:25:20,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:20,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283646071] [2020-10-13 06:25:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:21,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:21,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:25,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:25,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 06:25:25,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:25:25,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4302 [2020-10-13 06:25:25,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:25,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:25:25,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:25:25,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:25:25,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:25:26,473 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-10-13 06:25:26,590 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-13 06:25:26,812 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2020-10-13 06:25:27,028 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2020-10-13 06:25:27,373 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 89 [2020-10-13 06:25:27,770 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 84 [2020-10-13 06:25:28,093 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 78 [2020-10-13 06:25:28,421 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 72 [2020-10-13 06:25:28,692 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 58 [2020-10-13 06:25:28,844 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:28,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:28,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:28,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:28,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:28,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:28,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:25:28,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:28,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:28,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:25:28,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:29,692 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 06:25:29,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283646071] [2020-10-13 06:25:29,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:25:29,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 06:25:29,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063912670] [2020-10-13 06:25:29,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:25:29,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:29,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:25:29,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:25:29,718 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 13 states. [2020-10-13 06:25:30,104 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 06:25:30,766 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 173 [2020-10-13 06:25:31,467 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 173 [2020-10-13 06:25:32,191 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 181 [2020-10-13 06:25:33,041 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 178 [2020-10-13 06:25:34,332 WARN L193 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 177 [2020-10-13 06:25:35,869 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 218 DAG size of output: 176 [2020-10-13 06:25:38,985 WARN L193 SmtUtils]: Spent 938.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 174 [2020-10-13 06:25:39,932 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 172 [2020-10-13 06:25:42,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:42,810 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:25:42,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:25:42,812 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 150 [2020-10-13 06:25:42,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:42,829 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:25:42,829 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:25:42,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-10-13 06:25:42,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:25:42,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:25:42,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:25:42,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:25:42,905 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 150 [2020-10-13 06:25:42,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:42,906 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:25:42,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:25:42,907 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:25:42,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 06:25:42,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:42,912 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 06:25:42,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:25:42,912 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:42,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:42,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1098345218, now seen corresponding path program 1 times [2020-10-13 06:25:42,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:42,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885911983] [2020-10-13 06:25:42,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:43,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:43,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:46,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:46,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 06:25:46,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:25:46,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3889 [2020-10-13 06:25:46,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:46,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:46,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:25:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 06:25:46,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:25:47,122 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:47,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:47,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:47,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:47,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:47,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:25:47,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:47,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:47,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:47,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:47,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:47,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:47,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:47,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:25:47,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:47,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:25:47,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:47,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:47,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:47,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:25:47,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:25:47,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885911983] [2020-10-13 06:25:47,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:47,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:25:47,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021325650] [2020-10-13 06:25:47,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:25:47,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:47,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:25:47,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:25:47,273 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 5 states. [2020-10-13 06:25:47,414 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:25:49,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:49,608 INFO L93 Difference]: Finished difference Result 831 states and 1292 transitions. [2020-10-13 06:25:49,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:25:49,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-13 06:25:49,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:49,617 INFO L225 Difference]: With dead ends: 831 [2020-10-13 06:25:49,617 INFO L226 Difference]: Without dead ends: 588 [2020-10-13 06:25:49,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:25:49,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-10-13 06:25:49,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 587. [2020-10-13 06:25:49,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2020-10-13 06:25:49,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 845 transitions. [2020-10-13 06:25:49,658 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 845 transitions. Word has length 161 [2020-10-13 06:25:49,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:49,659 INFO L479 AbstractCegarLoop]: Abstraction has 587 states and 845 transitions. [2020-10-13 06:25:49,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:25:49,659 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 845 transitions. [2020-10-13 06:25:49,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 06:25:49,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:49,665 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:25:49,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:25:49,665 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:49,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:49,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1182761417, now seen corresponding path program 1 times [2020-10-13 06:25:49,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:49,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255460245] [2020-10-13 06:25:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:49,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:49,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:51,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:53,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:53,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 06:25:53,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:25:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3360 [2020-10-13 06:25:53,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:25:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:25:53,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:53,226 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:53,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:53,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:53,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:53,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:53,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:53,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:25:53,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:53,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:53,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:53,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:53,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:53,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:53,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:53,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:25:53,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:53,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:25:53,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:53,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:53,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:53,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:25:53,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:25:53,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:25:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:53,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:53,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:53,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:25:53,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:53,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:25:53,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:53,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:53,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:25:53,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:25:53,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:53,449 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:25:53,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255460245] [2020-10-13 06:25:53,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:53,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:25:53,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959449842] [2020-10-13 06:25:53,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:25:53,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:53,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:25:53,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:25:53,460 INFO L87 Difference]: Start difference. First operand 587 states and 845 transitions. Second operand 7 states. [2020-10-13 06:25:56,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:56,595 INFO L93 Difference]: Finished difference Result 1525 states and 2300 transitions. [2020-10-13 06:25:56,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:25:56,596 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-10-13 06:25:56,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:56,603 INFO L225 Difference]: With dead ends: 1525 [2020-10-13 06:25:56,603 INFO L226 Difference]: Without dead ends: 1059 [2020-10-13 06:25:56,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:25:56,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2020-10-13 06:25:56,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1046. [2020-10-13 06:25:56,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-10-13 06:25:56,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1556 transitions. [2020-10-13 06:25:56,655 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1556 transitions. Word has length 170 [2020-10-13 06:25:56,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:56,656 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1556 transitions. [2020-10-13 06:25:56,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:25:56,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1556 transitions. [2020-10-13 06:25:56,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 06:25:56,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:56,662 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 06:25:56,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:25:56,662 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:56,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:56,663 INFO L82 PathProgramCache]: Analyzing trace with hash -253551542, now seen corresponding path program 1 times [2020-10-13 06:25:56,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:56,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786636050] [2020-10-13 06:25:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:56,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:56,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:57,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:57,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 06:25:57,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:25:57,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1178 [2020-10-13 06:25:57,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:57,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:57,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:25:57,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 06:25:57,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:25:58,149 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:58,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:58,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:58,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:58,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:58,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:58,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:25:58,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:58,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:58,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:58,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:58,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:58,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:25:58,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:58,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 06:25:58,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:58,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:58,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:58,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:25:58,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:25:58,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786636050] [2020-10-13 06:25:58,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:58,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:25:58,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554638838] [2020-10-13 06:25:58,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:25:58,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:58,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:25:58,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:25:58,319 INFO L87 Difference]: Start difference. First operand 1046 states and 1556 transitions. Second operand 5 states. [2020-10-13 06:25:58,682 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:01,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:01,148 INFO L93 Difference]: Finished difference Result 2820 states and 4352 transitions. [2020-10-13 06:26:01,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:26:01,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-13 06:26:01,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:01,160 INFO L225 Difference]: With dead ends: 2820 [2020-10-13 06:26:01,161 INFO L226 Difference]: Without dead ends: 1895 [2020-10-13 06:26:01,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:26:01,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2020-10-13 06:26:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1889. [2020-10-13 06:26:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2020-10-13 06:26:01,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2565 transitions. [2020-10-13 06:26:01,236 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2565 transitions. Word has length 171 [2020-10-13 06:26:01,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:01,237 INFO L479 AbstractCegarLoop]: Abstraction has 1889 states and 2565 transitions. [2020-10-13 06:26:01,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:26:01,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2565 transitions. [2020-10-13 06:26:01,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-13 06:26:01,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:01,243 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:26:01,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:26:01,244 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:01,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:01,244 INFO L82 PathProgramCache]: Analyzing trace with hash -772002562, now seen corresponding path program 1 times [2020-10-13 06:26:01,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:01,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901978589] [2020-10-13 06:26:01,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:01,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:01,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:02,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:04,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:04,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 06:26:04,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:04,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2914 [2020-10-13 06:26:04,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:04,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:26:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:26:04,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:04,339 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:04,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:04,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:04,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:04,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:04,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:04,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:26:04,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:04,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:04,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:04,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:04,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:04,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:04,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:04,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:04,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:26:04,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:04,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:26:04,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:04,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:04,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:26:04,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:04,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:26:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:04,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:04,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:04,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 06:26:04,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:04,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 06:26:04,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:04,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:04,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:04,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:26:04,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:04,591 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:04,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901978589] [2020-10-13 06:26:04,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:04,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:04,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025969520] [2020-10-13 06:26:04,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:04,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:04,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:04,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:04,594 INFO L87 Difference]: Start difference. First operand 1889 states and 2565 transitions. Second operand 7 states. [2020-10-13 06:26:04,725 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:07,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:07,631 INFO L93 Difference]: Finished difference Result 5482 states and 7654 transitions. [2020-10-13 06:26:07,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:26:07,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2020-10-13 06:26:07,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:07,653 INFO L225 Difference]: With dead ends: 5482 [2020-10-13 06:26:07,653 INFO L226 Difference]: Without dead ends: 3714 [2020-10-13 06:26:07,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:26:07,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2020-10-13 06:26:07,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3680. [2020-10-13 06:26:07,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3680 states. [2020-10-13 06:26:07,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 5061 transitions. [2020-10-13 06:26:07,768 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 5061 transitions. Word has length 179 [2020-10-13 06:26:07,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:07,769 INFO L479 AbstractCegarLoop]: Abstraction has 3680 states and 5061 transitions. [2020-10-13 06:26:07,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:07,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 5061 transitions. [2020-10-13 06:26:07,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 06:26:07,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:07,775 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:26:07,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:26:07,775 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:07,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:07,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1353870421, now seen corresponding path program 1 times [2020-10-13 06:26:07,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:07,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78564835] [2020-10-13 06:26:07,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:07,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:08,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:09,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:09,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 06:26:09,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:09,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2100 [2020-10-13 06:26:09,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:09,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:09,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:26:09,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 06:26:09,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:10,058 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:10,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:10,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:10,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:10,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:10,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:10,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:26:10,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:10,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:10,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:10,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:10,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:10,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:10,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:10,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:10,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:26:10,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:10,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:26:10,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:26:10,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:10,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:26:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:10,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:10,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:10,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:26:10,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:10,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 06:26:10,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:10,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:10,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:10,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:26:10,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:10,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78564835] [2020-10-13 06:26:10,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:10,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:10,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582374114] [2020-10-13 06:26:10,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:10,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:10,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:10,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:10,263 INFO L87 Difference]: Start difference. First operand 3680 states and 5061 transitions. Second operand 7 states. [2020-10-13 06:26:10,396 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:10,862 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:13,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:13,212 INFO L93 Difference]: Finished difference Result 9063 states and 13167 transitions. [2020-10-13 06:26:13,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:26:13,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-13 06:26:13,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:13,240 INFO L225 Difference]: With dead ends: 9063 [2020-10-13 06:26:13,241 INFO L226 Difference]: Without dead ends: 5504 [2020-10-13 06:26:13,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:13,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5504 states. [2020-10-13 06:26:13,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5504 to 5460. [2020-10-13 06:26:13,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5460 states. [2020-10-13 06:26:13,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5460 states to 5460 states and 7487 transitions. [2020-10-13 06:26:13,454 INFO L78 Accepts]: Start accepts. Automaton has 5460 states and 7487 transitions. Word has length 180 [2020-10-13 06:26:13,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:13,454 INFO L479 AbstractCegarLoop]: Abstraction has 5460 states and 7487 transitions. [2020-10-13 06:26:13,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:13,455 INFO L276 IsEmpty]: Start isEmpty. Operand 5460 states and 7487 transitions. [2020-10-13 06:26:13,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-13 06:26:13,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:13,463 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:13,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:26:13,463 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:13,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:13,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1999124130, now seen corresponding path program 1 times [2020-10-13 06:26:13,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:13,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754448222] [2020-10-13 06:26:13,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:13,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:13,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:14,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:16,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:16,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-13 06:26:16,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:16,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3016 [2020-10-13 06:26:16,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:16,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:16,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:26:16,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:26:16,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:16,706 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:16,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:16,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:16,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:16,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:16,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:16,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:26:16,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:16,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:16,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:16,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:16,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:16,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:16,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:16,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:16,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:16,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:16,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:26:16,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:16,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:16,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:16,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:26:16,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:16,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:26:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:16,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:16,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:16,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:26:16,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:16,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 06:26:16,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:26:16,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:17,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754448222] [2020-10-13 06:26:17,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:17,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:17,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55308109] [2020-10-13 06:26:17,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:17,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:17,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:17,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:17,007 INFO L87 Difference]: Start difference. First operand 5460 states and 7487 transitions. Second operand 7 states. [2020-10-13 06:26:17,276 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-13 06:26:17,729 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:26:20,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:20,402 INFO L93 Difference]: Finished difference Result 16293 states and 24575 transitions. [2020-10-13 06:26:20,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:26:20,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-10-13 06:26:20,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:20,474 INFO L225 Difference]: With dead ends: 16293 [2020-10-13 06:26:20,475 INFO L226 Difference]: Without dead ends: 10954 [2020-10-13 06:26:20,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:26:20,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10954 states. [2020-10-13 06:26:20,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10954 to 10706. [2020-10-13 06:26:20,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10706 states. [2020-10-13 06:26:20,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10706 states to 10706 states and 14021 transitions. [2020-10-13 06:26:20,829 INFO L78 Accepts]: Start accepts. Automaton has 10706 states and 14021 transitions. Word has length 195 [2020-10-13 06:26:20,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:20,830 INFO L479 AbstractCegarLoop]: Abstraction has 10706 states and 14021 transitions. [2020-10-13 06:26:20,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 10706 states and 14021 transitions. [2020-10-13 06:26:20,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-13 06:26:20,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:20,840 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:20,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:26:20,840 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:20,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:20,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1943086182, now seen corresponding path program 1 times [2020-10-13 06:26:20,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:20,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988630207] [2020-10-13 06:26:20,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:20,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:21,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:21,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:23,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:23,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-13 06:26:23,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:23,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2685 [2020-10-13 06:26:23,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:23,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:26:23,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 06:26:23,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:23,753 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:23,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:23,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:23,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:23,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:23,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:23,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:26:23,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:23,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:23,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:23,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:23,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:23,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:26:23,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:23,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:26:23,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:23,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:23,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:23,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:26:23,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:23,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:26:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:23,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:23,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:23,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:26:23,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:23,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 06:26:23,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:23,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:23,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:23,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 06:26:23,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:24,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988630207] [2020-10-13 06:26:24,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:24,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:26:24,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933952283] [2020-10-13 06:26:24,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:26:24,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:24,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:26:24,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:26:24,066 INFO L87 Difference]: Start difference. First operand 10706 states and 14021 transitions. Second operand 8 states. [2020-10-13 06:26:24,206 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:26:24,737 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:26:26,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:26,861 INFO L93 Difference]: Finished difference Result 21383 states and 28086 transitions. [2020-10-13 06:26:26,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:26:26,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 206 [2020-10-13 06:26:26,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:26,897 INFO L225 Difference]: With dead ends: 21383 [2020-10-13 06:26:26,898 INFO L226 Difference]: Without dead ends: 10798 [2020-10-13 06:26:26,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:26,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10798 states. [2020-10-13 06:26:27,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10798 to 10778. [2020-10-13 06:26:27,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10778 states. [2020-10-13 06:26:27,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10778 states to 10778 states and 13895 transitions. [2020-10-13 06:26:27,162 INFO L78 Accepts]: Start accepts. Automaton has 10778 states and 13895 transitions. Word has length 206 [2020-10-13 06:26:27,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:27,163 INFO L479 AbstractCegarLoop]: Abstraction has 10778 states and 13895 transitions. [2020-10-13 06:26:27,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:26:27,163 INFO L276 IsEmpty]: Start isEmpty. Operand 10778 states and 13895 transitions. [2020-10-13 06:26:27,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-13 06:26:27,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:27,177 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:27,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:26:27,177 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:27,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:27,177 INFO L82 PathProgramCache]: Analyzing trace with hash 599992449, now seen corresponding path program 1 times [2020-10-13 06:26:27,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:27,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115862740] [2020-10-13 06:26:27,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:27,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:27,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:27,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:28,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:31,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:32,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:32,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 06:26:32,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:26:32,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 06:26:32,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:32,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:32,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:26:32,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:26:32,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:32,391 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:32,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:32,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:32,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:32,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:32,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:32,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:26:32,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:32,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:32,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:32,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:32,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:32,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:32,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:26:32,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:32,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:32,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:32,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:26:32,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:32,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:26:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:32,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:32,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:32,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:26:32,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:32,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:26:32,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:32,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:32,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:26:32,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:32,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 06:26:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:32,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:32,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:32,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:26:32,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:32,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:26:32,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 06:26:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:32,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 69 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 06:26:32,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115862740] [2020-10-13 06:26:32,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:32,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:32,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448277827] [2020-10-13 06:26:32,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:32,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:32,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:32,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:32,685 INFO L87 Difference]: Start difference. First operand 10778 states and 13895 transitions. Second operand 7 states. [2020-10-13 06:26:32,818 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:26:34,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:34,245 INFO L93 Difference]: Finished difference Result 21257 states and 27540 transitions. [2020-10-13 06:26:34,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:26:34,245 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-10-13 06:26:34,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:34,286 INFO L225 Difference]: With dead ends: 21257 [2020-10-13 06:26:34,286 INFO L226 Difference]: Without dead ends: 10600 [2020-10-13 06:26:34,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:26:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10600 states. [2020-10-13 06:26:34,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10600 to 10588. [2020-10-13 06:26:34,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10588 states. [2020-10-13 06:26:34,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10588 states to 10588 states and 13283 transitions. [2020-10-13 06:26:34,489 INFO L78 Accepts]: Start accepts. Automaton has 10588 states and 13283 transitions. Word has length 212 [2020-10-13 06:26:34,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:34,490 INFO L479 AbstractCegarLoop]: Abstraction has 10588 states and 13283 transitions. [2020-10-13 06:26:34,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:34,490 INFO L276 IsEmpty]: Start isEmpty. Operand 10588 states and 13283 transitions. [2020-10-13 06:26:34,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-13 06:26:34,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:34,505 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, 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 06:26:34,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:26:34,506 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:34,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:34,506 INFO L82 PathProgramCache]: Analyzing trace with hash -251921898, now seen corresponding path program 1 times [2020-10-13 06:26:34,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:34,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344569017] [2020-10-13 06:26:34,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:34,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:35,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:36,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:36,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-13 06:26:36,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:26:36,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2244 [2020-10-13 06:26:36,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:36,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:26:36,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:26:36,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:26:36,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:36,956 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:36,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:36,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:36,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:36,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:36,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:36,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:26:36,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:36,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:26:36,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:37,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:37,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:37,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:37,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:26:37,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:37,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 06:26:37,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:26:37,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:37,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:26:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:37,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:37,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:37,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:26:37,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:37,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:26:37,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:37,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:37,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 06:26:37,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:37,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:37,264 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 71 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 06:26:37,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344569017] [2020-10-13 06:26:37,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:37,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:37,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032271992] [2020-10-13 06:26:37,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:37,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:37,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:37,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:37,266 INFO L87 Difference]: Start difference. First operand 10588 states and 13283 transitions. Second operand 7 states. [2020-10-13 06:26:37,398 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:26:38,272 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:26:40,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:40,268 INFO L93 Difference]: Finished difference Result 23863 states and 30233 transitions. [2020-10-13 06:26:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 06:26:40,269 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-10-13 06:26:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:40,303 INFO L225 Difference]: With dead ends: 23863 [2020-10-13 06:26:40,303 INFO L226 Difference]: Without dead ends: 13396 [2020-10-13 06:26:40,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:26:40,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13396 states. [2020-10-13 06:26:40,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13396 to 13280. [2020-10-13 06:26:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13280 states. [2020-10-13 06:26:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13280 states to 13280 states and 16794 transitions. [2020-10-13 06:26:40,575 INFO L78 Accepts]: Start accepts. Automaton has 13280 states and 16794 transitions. Word has length 227 [2020-10-13 06:26:40,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:40,575 INFO L479 AbstractCegarLoop]: Abstraction has 13280 states and 16794 transitions. [2020-10-13 06:26:40,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:40,576 INFO L276 IsEmpty]: Start isEmpty. Operand 13280 states and 16794 transitions. [2020-10-13 06:26:40,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-13 06:26:40,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:40,588 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 06:26:40,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:26:40,589 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:40,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:40,589 INFO L82 PathProgramCache]: Analyzing trace with hash -733829462, now seen corresponding path program 1 times [2020-10-13 06:26:40,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:40,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278133388] [2020-10-13 06:26:40,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:40,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:40,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:41,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:43,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:45,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:45,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-13 06:26:45,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:26:45,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 06:26:45,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:26:45,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:26:45,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:45,826 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:45,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:45,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:45,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:45,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:45,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:45,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:26:45,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:45,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:45,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:45,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:45,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:45,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:45,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:45,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:45,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:45,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:45,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:26:45,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:45,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:26:45,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:45,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:26:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:45,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:45,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:45,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:26:45,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:45,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:26:45,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:45,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:26:45,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:46,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 06:26:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:46,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:46,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:46,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:26:46,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:46,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:26:46,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 06:26:46,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:46,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:46,125 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 90 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 06:26:46,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278133388] [2020-10-13 06:26:46,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:46,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:46,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488054563] [2020-10-13 06:26:46,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:46,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:46,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:46,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:46,127 INFO L87 Difference]: Start difference. First operand 13280 states and 16794 transitions. Second operand 7 states. [2020-10-13 06:26:46,423 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:26:47,288 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 06:26:49,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:49,487 INFO L93 Difference]: Finished difference Result 31723 states and 43006 transitions. [2020-10-13 06:26:49,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:26:49,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-13 06:26:49,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:49,550 INFO L225 Difference]: With dead ends: 31723 [2020-10-13 06:26:49,550 INFO L226 Difference]: Without dead ends: 18564 [2020-10-13 06:26:49,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:49,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18564 states. [2020-10-13 06:26:50,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18564 to 18068. [2020-10-13 06:26:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18068 states. [2020-10-13 06:26:50,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18068 states to 18068 states and 22603 transitions. [2020-10-13 06:26:50,122 INFO L78 Accepts]: Start accepts. Automaton has 18068 states and 22603 transitions. Word has length 232 [2020-10-13 06:26:50,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:50,122 INFO L479 AbstractCegarLoop]: Abstraction has 18068 states and 22603 transitions. [2020-10-13 06:26:50,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:50,123 INFO L276 IsEmpty]: Start isEmpty. Operand 18068 states and 22603 transitions. [2020-10-13 06:26:50,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-13 06:26:50,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:50,138 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 06:26:50,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:26:50,139 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:50,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:50,139 INFO L82 PathProgramCache]: Analyzing trace with hash -472600607, now seen corresponding path program 1 times [2020-10-13 06:26:50,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:50,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012048186] [2020-10-13 06:26:50,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:50,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:50,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:50,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:52,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:52,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:53,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:53,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-13 06:26:53,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:26:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3118 [2020-10-13 06:26:53,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:26:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 06:26:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:53,471 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:53,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:53,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:53,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:53,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:53,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:53,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:26:53,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:53,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:53,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:53,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:53,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:53,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:26:53,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:53,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:26:53,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:53,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:53,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:53,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:26:53,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:53,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:26:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:53,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:53,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:53,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 06:26:53,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:53,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 06:26:53,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 06:26:53,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:26:53,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012048186] [2020-10-13 06:26:53,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:53,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:26:53,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009926645] [2020-10-13 06:26:53,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:53,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:53,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:53,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:53,824 INFO L87 Difference]: Start difference. First operand 18068 states and 22603 transitions. Second operand 7 states. [2020-10-13 06:26:53,962 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:26:55,601 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:26:56,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:56,620 INFO L93 Difference]: Finished difference Result 47782 states and 61435 transitions. [2020-10-13 06:26:56,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:26:56,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-10-13 06:26:56,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:56,697 INFO L225 Difference]: With dead ends: 47782 [2020-10-13 06:26:56,698 INFO L226 Difference]: Without dead ends: 29835 [2020-10-13 06:26:56,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:56,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29835 states. [2020-10-13 06:26:57,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29835 to 29679. [2020-10-13 06:26:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29679 states. [2020-10-13 06:26:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29679 states to 29679 states and 38085 transitions. [2020-10-13 06:26:57,496 INFO L78 Accepts]: Start accepts. Automaton has 29679 states and 38085 transitions. Word has length 240 [2020-10-13 06:26:57,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:57,497 INFO L479 AbstractCegarLoop]: Abstraction has 29679 states and 38085 transitions. [2020-10-13 06:26:57,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 29679 states and 38085 transitions. [2020-10-13 06:26:57,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-13 06:26:57,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:57,533 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 06:26:57,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:26:57,534 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:57,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:57,534 INFO L82 PathProgramCache]: Analyzing trace with hash -81674694, now seen corresponding path program 1 times [2020-10-13 06:26:57,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:57,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772561194] [2020-10-13 06:26:57,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:57,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:57,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:57,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:00,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:01,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:02,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:02,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-13 06:27:02,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:27:02,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 06:27:02,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:02,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:02,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:27:02,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:27:02,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:02,741 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:02,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:02,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:02,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:02,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:02,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:02,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:27:02,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:02,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:02,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:02,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:02,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:02,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:27:02,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:02,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:27:02,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:02,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:27:02,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:02,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:27:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:02,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:02,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:02,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:27:02,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:27:02,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:27:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:02,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 06:27:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:02,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:02,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:02,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:27:02,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:02,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 06:27:02,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:02,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:02,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 06:27:02,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:02,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:03,075 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 134 proven. 15 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-13 06:27:03,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772561194] [2020-10-13 06:27:03,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:03,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:03,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640037776] [2020-10-13 06:27:03,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:03,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:03,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:03,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:03,079 INFO L87 Difference]: Start difference. First operand 29679 states and 38085 transitions. Second operand 7 states. [2020-10-13 06:27:03,526 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:27:04,661 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:27:06,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:06,450 INFO L93 Difference]: Finished difference Result 68797 states and 90191 transitions. [2020-10-13 06:27:06,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:27:06,451 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2020-10-13 06:27:06,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:06,556 INFO L225 Difference]: With dead ends: 68797 [2020-10-13 06:27:06,556 INFO L226 Difference]: Without dead ends: 39239 [2020-10-13 06:27:06,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:27:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39239 states. [2020-10-13 06:27:07,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39239 to 39053. [2020-10-13 06:27:07,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39053 states. [2020-10-13 06:27:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39053 states to 39053 states and 49401 transitions. [2020-10-13 06:27:07,257 INFO L78 Accepts]: Start accepts. Automaton has 39053 states and 49401 transitions. Word has length 278 [2020-10-13 06:27:07,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:07,257 INFO L479 AbstractCegarLoop]: Abstraction has 39053 states and 49401 transitions. [2020-10-13 06:27:07,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:07,258 INFO L276 IsEmpty]: Start isEmpty. Operand 39053 states and 49401 transitions. [2020-10-13 06:27:07,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-13 06:27:07,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:07,298 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 06:27:07,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:27:07,299 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:07,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:07,299 INFO L82 PathProgramCache]: Analyzing trace with hash 505142441, now seen corresponding path program 1 times [2020-10-13 06:27:07,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:07,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285409882] [2020-10-13 06:27:07,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:07,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:07,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:08,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:08,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:09,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:12,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:12,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-13 06:27:12,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:27:12,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5375 [2020-10-13 06:27:12,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:12,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:12,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:27:12,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:27:12,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:12,869 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:12,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:12,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:12,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:12,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:12,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:27:12,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:12,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:12,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:12,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:12,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:12,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:12,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:12,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:12,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:27:12,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:12,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:27:12,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:12,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:12,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:12,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:27:12,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:12,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:27:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:12,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:13,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:13,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:27:13,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:13,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 06:27:13,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:27:13,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:13,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 06:27:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:13,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:13,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:13,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:27:13,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:13,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 06:27:13,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:13,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:13,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 06:27:13,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:13,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 143 proven. 33 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 06:27:13,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285409882] [2020-10-13 06:27:13,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:13,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:13,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736994966] [2020-10-13 06:27:13,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:13,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:13,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:13,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:13,266 INFO L87 Difference]: Start difference. First operand 39053 states and 49401 transitions. Second operand 7 states. [2020-10-13 06:27:13,551 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:14,628 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:27:16,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:16,532 INFO L93 Difference]: Finished difference Result 101690 states and 137882 transitions. [2020-10-13 06:27:16,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:27:16,532 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 282 [2020-10-13 06:27:16,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:16,756 INFO L225 Difference]: With dead ends: 101690 [2020-10-13 06:27:16,757 INFO L226 Difference]: Without dead ends: 62758 [2020-10-13 06:27:16,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:27:16,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62758 states. [2020-10-13 06:27:18,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62758 to 61269. [2020-10-13 06:27:18,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61269 states. [2020-10-13 06:27:18,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61269 states to 61269 states and 74993 transitions. [2020-10-13 06:27:18,565 INFO L78 Accepts]: Start accepts. Automaton has 61269 states and 74993 transitions. Word has length 282 [2020-10-13 06:27:18,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:18,566 INFO L479 AbstractCegarLoop]: Abstraction has 61269 states and 74993 transitions. [2020-10-13 06:27:18,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:18,566 INFO L276 IsEmpty]: Start isEmpty. Operand 61269 states and 74993 transitions. [2020-10-13 06:27:18,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-13 06:27:18,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:18,608 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-13 06:27:18,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:27:18,609 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:18,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:18,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1554279453, now seen corresponding path program 1 times [2020-10-13 06:27:18,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:18,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536581648] [2020-10-13 06:27:18,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:18,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:18,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:18,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:18,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:19,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:20,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:20,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:22,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:23,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:23,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:23,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-13 06:27:23,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 06:27:23,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-13 06:27:23,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-13 06:27:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:27:23,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:23,952 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:23,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:23,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:23,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:23,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:23,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:23,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:27:23,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:23,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:24,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:24,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:24,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:24,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:27:24,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:24,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 06:27:24,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:24,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:24,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:24,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:24,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:24,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:27:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:24,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:24,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:24,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:27:24,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:24,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:27:24,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:24,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:24,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:24,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:24,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:24,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:27:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:24,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:24,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:24,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:27:24,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:24,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:27:24,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 06:27:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:27:24,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:24,195 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-13 06:27:24,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536581648] [2020-10-13 06:27:24,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:27:24,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 06:27:24,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590352822] [2020-10-13 06:27:24,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:27:24,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:24,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:27:24,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:27:24,197 INFO L87 Difference]: Start difference. First operand 61269 states and 74993 transitions. Second operand 5 states. [2020-10-13 06:27:24,326 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:25,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:25,953 INFO L93 Difference]: Finished difference Result 122425 states and 149867 transitions. [2020-10-13 06:27:25,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:27:25,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 298 [2020-10-13 06:27:25,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:27,776 INFO L225 Difference]: With dead ends: 122425 [2020-10-13 06:27:27,776 INFO L226 Difference]: Without dead ends: 61277 [2020-10-13 06:27:27,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:27:27,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61277 states. [2020-10-13 06:27:28,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61277 to 61257. [2020-10-13 06:27:28,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61257 states. [2020-10-13 06:27:28,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61257 states to 61257 states and 74957 transitions. [2020-10-13 06:27:28,893 INFO L78 Accepts]: Start accepts. Automaton has 61257 states and 74957 transitions. Word has length 298 [2020-10-13 06:27:28,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:28,894 INFO L479 AbstractCegarLoop]: Abstraction has 61257 states and 74957 transitions. [2020-10-13 06:27:28,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:27:28,894 INFO L276 IsEmpty]: Start isEmpty. Operand 61257 states and 74957 transitions. [2020-10-13 06:27:28,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-13 06:27:28,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:28,928 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2020-10-13 06:27:28,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:27:28,929 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:28,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:28,929 INFO L82 PathProgramCache]: Analyzing trace with hash 782448071, now seen corresponding path program 1 times [2020-10-13 06:27:28,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:28,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618811945] [2020-10-13 06:27:28,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:29,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:29,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:29,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:32,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:32,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:34,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:34,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-13 06:27:34,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:27:34,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 06:27:34,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:34,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:34,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-13 06:27:34,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 06:27:34,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:34,183 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:34,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:34,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:34,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:34,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:34,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:34,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:27:34,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:34,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:34,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:34,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:34,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:34,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:34,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:34,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:34,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:27:34,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:34,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:27:34,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:34,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:34,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:34,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:34,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:34,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:27:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:34,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:34,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:34,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:27:34,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:34,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 06:27:34,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:34,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:34,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:34,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:27:34,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:34,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:27:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:34,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:34,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:34,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:27:34,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:34,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:27:34,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:34,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:34,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:34,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:27:34,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:34,576 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:27:34,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618811945] [2020-10-13 06:27:34,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:34,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:34,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978228002] [2020-10-13 06:27:34,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:34,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:34,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:34,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:34,578 INFO L87 Difference]: Start difference. First operand 61257 states and 74957 transitions. Second operand 7 states. [2020-10-13 06:27:34,790 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:27:35,892 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:27:38,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:38,895 INFO L93 Difference]: Finished difference Result 132148 states and 170182 transitions. [2020-10-13 06:27:38,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:27:38,895 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-13 06:27:38,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:39,115 INFO L225 Difference]: With dead ends: 132148 [2020-10-13 06:27:39,115 INFO L226 Difference]: Without dead ends: 71012 [2020-10-13 06:27:39,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:27:39,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71012 states. [2020-10-13 06:27:40,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71012 to 69638. [2020-10-13 06:27:40,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69638 states. [2020-10-13 06:27:40,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69638 states to 69638 states and 84684 transitions. [2020-10-13 06:27:40,483 INFO L78 Accepts]: Start accepts. Automaton has 69638 states and 84684 transitions. Word has length 307 [2020-10-13 06:27:40,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:40,483 INFO L479 AbstractCegarLoop]: Abstraction has 69638 states and 84684 transitions. [2020-10-13 06:27:40,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:40,483 INFO L276 IsEmpty]: Start isEmpty. Operand 69638 states and 84684 transitions. [2020-10-13 06:27:40,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-13 06:27:40,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:40,514 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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, 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] [2020-10-13 06:27:40,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:27:40,514 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:40,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:40,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1351079656, now seen corresponding path program 1 times [2020-10-13 06:27:40,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:40,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234605300] [2020-10-13 06:27:40,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:40,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:40,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:40,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:43,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:43,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:45,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:45,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-13 06:27:45,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:27:45,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 06:27:45,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:45,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:45,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-13 06:27:45,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:27:45,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:45,734 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:45,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:45,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:45,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:45,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:45,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:45,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:27:45,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:45,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:45,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:45,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:45,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:45,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:45,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:45,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:27:45,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:45,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:27:45,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:45,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:45,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:45,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:45,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:45,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:27:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:45,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:45,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:45,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:27:45,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:45,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 06:27:45,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:45,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:45,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:45,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:27:45,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:45,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:27:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:45,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:45,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:45,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:27:45,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:45,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:27:45,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:27:45,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:45,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 06:27:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:45,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:45,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:45,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:27:45,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:45,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:27:45,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 06:27:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:45,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 176 proven. 7 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-13 06:27:46,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234605300] [2020-10-13 06:27:46,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:46,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:46,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025089690] [2020-10-13 06:27:46,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:46,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:46,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:46,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:46,047 INFO L87 Difference]: Start difference. First operand 69638 states and 84684 transitions. Second operand 7 states. [2020-10-13 06:27:46,177 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:47,416 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:48,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:48,919 INFO L93 Difference]: Finished difference Result 138461 states and 169350 transitions. [2020-10-13 06:27:48,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:27:48,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 317 [2020-10-13 06:27:48,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:49,049 INFO L225 Difference]: With dead ends: 138461 [2020-10-13 06:27:49,049 INFO L226 Difference]: Without dead ends: 69813 [2020-10-13 06:27:49,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:27:49,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69813 states. [2020-10-13 06:27:50,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69813 to 69563. [2020-10-13 06:27:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69563 states. [2020-10-13 06:27:50,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69563 states to 69563 states and 81926 transitions. [2020-10-13 06:27:50,175 INFO L78 Accepts]: Start accepts. Automaton has 69563 states and 81926 transitions. Word has length 317 [2020-10-13 06:27:50,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:50,175 INFO L479 AbstractCegarLoop]: Abstraction has 69563 states and 81926 transitions. [2020-10-13 06:27:50,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:50,176 INFO L276 IsEmpty]: Start isEmpty. Operand 69563 states and 81926 transitions. [2020-10-13 06:27:50,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-13 06:27:50,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:50,199 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 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 06:27:50,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:27:50,199 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:50,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:50,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1927844348, now seen corresponding path program 1 times [2020-10-13 06:27:50,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:50,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890542543] [2020-10-13 06:27:50,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:50,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:50,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:50,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:51,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:55,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:55,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-13 06:27:55,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:27:55,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 06:27:55,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-13 06:27:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:27:55,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:55,824 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:55,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:55,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:55,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:55,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:55,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:55,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:27:55,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:55,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:55,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:55,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:55,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:55,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:55,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:55,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:55,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:27:55,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:55,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:27:55,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:55,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:55,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:55,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:55,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:55,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:27:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:55,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:55,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:55,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 06:27:55,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:55,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:27:55,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:55,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:55,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:55,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:55,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:55,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 06:27:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:55,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:56,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:56,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:27:56,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:56,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 06:27:56,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:56,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:56,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 06:27:56,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:56,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-13 06:27:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:56,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:56,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:56,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:27:56,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:56,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:27:56,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:56,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:56,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:56,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:27:56,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:56,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 06:27:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:56,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:56,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:56,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:27:56,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:56,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:27:56,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 06:27:56,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:56,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 199 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 06:27:56,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890542543] [2020-10-13 06:27:56,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:56,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:56,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357808407] [2020-10-13 06:27:56,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:56,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:56,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:56,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:56,189 INFO L87 Difference]: Start difference. First operand 69563 states and 81926 transitions. Second operand 7 states. [2020-10-13 06:27:56,774 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:27:57,270 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:28:03,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:03,108 INFO L93 Difference]: Finished difference Result 260541 states and 328618 transitions. [2020-10-13 06:28:03,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:28:03,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 331 [2020-10-13 06:28:03,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:03,599 INFO L225 Difference]: With dead ends: 260541 [2020-10-13 06:28:03,599 INFO L226 Difference]: Without dead ends: 191974 [2020-10-13 06:28:03,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:03,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191974 states. [2020-10-13 06:28:06,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191974 to 188410. [2020-10-13 06:28:06,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188410 states. [2020-10-13 06:28:07,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188410 states to 188410 states and 224173 transitions. [2020-10-13 06:28:07,166 INFO L78 Accepts]: Start accepts. Automaton has 188410 states and 224173 transitions. Word has length 331 [2020-10-13 06:28:07,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:07,166 INFO L479 AbstractCegarLoop]: Abstraction has 188410 states and 224173 transitions. [2020-10-13 06:28:07,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:07,167 INFO L276 IsEmpty]: Start isEmpty. Operand 188410 states and 224173 transitions. [2020-10-13 06:28:07,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-13 06:28:07,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:07,258 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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, 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, 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] [2020-10-13 06:28:07,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 06:28:07,259 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:07,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:07,259 INFO L82 PathProgramCache]: Analyzing trace with hash 976892740, now seen corresponding path program 1 times [2020-10-13 06:28:07,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:07,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196458618] [2020-10-13 06:28:07,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:07,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:07,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:07,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:12,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:12,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-13 06:28:12,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:28:12,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 06:28:12,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:12,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:12,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-13 06:28:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:28:12,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:12,553 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:12,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:12,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:12,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:12,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:12,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:12,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:28:12,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:12,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:12,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:12,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:12,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:12,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:12,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:12,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:12,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:28:12,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:12,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:28:12,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:12,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:12,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:12,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:12,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:12,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:28:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:12,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:12,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:12,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 06:28:12,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:12,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 06:28:12,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 06:28:12,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:12,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-13 06:28:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:12,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:12,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:12,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:28:12,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:12,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:28:12,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:28:12,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:12,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-13 06:28:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:12,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:12,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:12,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:28:12,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:12,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:28:12,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:12,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:12,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 06:28:12,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:12,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:12,967 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 193 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-13 06:28:12,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196458618] [2020-10-13 06:28:12,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:12,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:12,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187774839] [2020-10-13 06:28:12,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:12,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:12,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:12,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:12,969 INFO L87 Difference]: Start difference. First operand 188410 states and 224173 transitions. Second operand 7 states. [2020-10-13 06:28:13,778 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:28:14,460 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 06:28:19,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:19,081 INFO L93 Difference]: Finished difference Result 411442 states and 515730 transitions. [2020-10-13 06:28:19,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:28:19,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 334 [2020-10-13 06:28:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:23,466 INFO L225 Difference]: With dead ends: 411442 [2020-10-13 06:28:23,467 INFO L226 Difference]: Without dead ends: 224028 [2020-10-13 06:28:23,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:23,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224028 states. [2020-10-13 06:28:27,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224028 to 218520. [2020-10-13 06:28:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218520 states. [2020-10-13 06:28:27,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218520 states to 218520 states and 256771 transitions. [2020-10-13 06:28:27,427 INFO L78 Accepts]: Start accepts. Automaton has 218520 states and 256771 transitions. Word has length 334 [2020-10-13 06:28:27,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:27,427 INFO L479 AbstractCegarLoop]: Abstraction has 218520 states and 256771 transitions. [2020-10-13 06:28:27,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:27,427 INFO L276 IsEmpty]: Start isEmpty. Operand 218520 states and 256771 transitions. [2020-10-13 06:28:27,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-13 06:28:27,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:27,494 INFO L422 BasicCegarLoop]: trace histogram [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, 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 06:28:27,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 06:28:27,494 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:27,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:27,495 INFO L82 PathProgramCache]: Analyzing trace with hash 246546493, now seen corresponding path program 1 times [2020-10-13 06:28:27,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:27,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193938360] [2020-10-13 06:28:27,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:27,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:27,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:28,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:32,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:32,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:32,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-13 06:28:32,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:28:32,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-13 06:28:32,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:32,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:32,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:28:32,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 06:28:32,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:32,816 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:32,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:32,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:32,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:32,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:32,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:32,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:28:32,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:32,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:32,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:32,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:32,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:32,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:32,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:32,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:32,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:28:32,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:32,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:28:32,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:32,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:32,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:32,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:28:32,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:32,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:28:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:32,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:33,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:33,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 06:28:33,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:33,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 06:28:33,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 06:28:33,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:33,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 06:28:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:33,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:33,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:33,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 06:28:33,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 06:28:33,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:28:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:33,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 193 proven. 66 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 06:28:33,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193938360] [2020-10-13 06:28:33,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:33,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:33,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713069122] [2020-10-13 06:28:33,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:33,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:33,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:33,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:33,272 INFO L87 Difference]: Start difference. First operand 218520 states and 256771 transitions. Second operand 7 states. [2020-10-13 06:28:33,420 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 06:28:34,711 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:28:37,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:37,969 INFO L93 Difference]: Finished difference Result 454331 states and 536259 transitions. [2020-10-13 06:28:37,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:28:37,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 340 [2020-10-13 06:28:37,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:38,490 INFO L225 Difference]: With dead ends: 454331 [2020-10-13 06:28:38,491 INFO L226 Difference]: Without dead ends: 236809 [2020-10-13 06:28:38,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:38,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236809 states. [2020-10-13 06:28:41,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236809 to 236467. [2020-10-13 06:28:41,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236467 states. [2020-10-13 06:28:42,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236467 states to 236467 states and 278651 transitions. [2020-10-13 06:28:42,377 INFO L78 Accepts]: Start accepts. Automaton has 236467 states and 278651 transitions. Word has length 340 [2020-10-13 06:28:42,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:42,378 INFO L479 AbstractCegarLoop]: Abstraction has 236467 states and 278651 transitions. [2020-10-13 06:28:42,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:42,378 INFO L276 IsEmpty]: Start isEmpty. Operand 236467 states and 278651 transitions. [2020-10-13 06:28:42,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-13 06:28:42,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:42,445 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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 06:28:42,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 06:28:42,445 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:42,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:42,446 INFO L82 PathProgramCache]: Analyzing trace with hash 490912822, now seen corresponding path program 1 times [2020-10-13 06:28:42,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:42,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063863881] [2020-10-13 06:28:42,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:43,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:43,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:43,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking...