/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_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:17:25,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:17:25,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:17:25,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:17:25,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:17:25,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:17:25,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:17:25,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:17:25,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:17:25,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:17:25,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:17:25,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:17:25,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:17:25,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:17:25,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:17:25,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:17:25,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:17:25,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:17:25,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:17:25,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:17:25,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:17:25,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:17:25,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:17:25,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:17:25,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:17:25,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:17:25,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:17:25,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:17:25,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:17:25,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:17:25,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:17:25,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:17:25,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:17:25,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:17:25,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:17:25,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:17:25,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:17:25,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:17:25,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:17:25,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:17:25,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:17:25,300 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 06:17:25,323 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:17:25,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:17:25,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:17:25,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:17:25,325 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:17:25,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:17:25,325 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:17:25,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:17:25,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:17:25,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:17:25,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:17:25,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:17:25,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:17:25,326 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:17:25,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:17:25,327 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:17:25,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:17:25,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:17:25,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:17:25,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:17:25,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:17:25,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:17:25,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:17:25,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:17:25,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:17:25,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:17:25,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:17:25,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:17:25,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:17:25,329 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 06:17:25,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:17:25,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:17:25,674 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:17:25,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:17:25,676 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:17:25,677 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label14.c [2020-10-13 06:17:25,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edf448006/08e14c948d8b492ab9229e6aaa81444d/FLAGd67694fbb [2020-10-13 06:17:26,392 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:17:26,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label14.c [2020-10-13 06:17:26,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edf448006/08e14c948d8b492ab9229e6aaa81444d/FLAGd67694fbb [2020-10-13 06:17:26,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edf448006/08e14c948d8b492ab9229e6aaa81444d [2020-10-13 06:17:26,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:17:26,538 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:17:26,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:17:26,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:17:26,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:17:26,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:17:26" (1/1) ... [2020-10-13 06:17:26,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31653048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:17:26, skipping insertion in model container [2020-10-13 06:17:26,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:17:26" (1/1) ... [2020-10-13 06:17:26,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:17:26,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:17:27,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:17:27,427 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:17:27,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:17:27,775 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:17:27,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:17:27 WrapperNode [2020-10-13 06:17:27,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:17:27,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:17:27,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:17:27,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:17:27,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:17:27" (1/1) ... [2020-10-13 06:17:27,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:17:27" (1/1) ... [2020-10-13 06:17:27,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:17:27" (1/1) ... [2020-10-13 06:17:27,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:17:27" (1/1) ... [2020-10-13 06:17:27,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:17:27" (1/1) ... [2020-10-13 06:17:27,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:17:27" (1/1) ... [2020-10-13 06:17:27,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:17:27" (1/1) ... [2020-10-13 06:17:27,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:17:27,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:17:27,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:17:27,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:17:27,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:17:27" (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 06:17:28,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:17:28,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:17:28,044 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:17:28,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:17:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:17:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:17:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:17:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:17:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:17:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:17:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:17:29,974 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:17:29,974 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:17:29,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:17:29 BoogieIcfgContainer [2020-10-13 06:17:29,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:17:29,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:17:29,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:17:29,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:17:29,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:17:26" (1/3) ... [2020-10-13 06:17:29,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a57d348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:17:29, skipping insertion in model container [2020-10-13 06:17:29,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:17:27" (2/3) ... [2020-10-13 06:17:29,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a57d348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:17:29, skipping insertion in model container [2020-10-13 06:17:29,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:17:29" (3/3) ... [2020-10-13 06:17:29,990 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label14.c [2020-10-13 06:17:30,001 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:17:30,009 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:17:30,023 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:17:30,049 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:17:30,050 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:17:30,050 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:17:30,050 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:17:30,050 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:17:30,050 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:17:30,050 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:17:30,050 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:17:30,075 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:17:30,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 06:17:30,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:30,092 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, 1, 1, 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 06:17:30,093 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:30,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:30,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1597050419, now seen corresponding path program 1 times [2020-10-13 06:17:30,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:30,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917906263] [2020-10-13 06:17:30,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:30,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:31,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:34,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:34,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 06:17:34,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:17:34,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4241 [2020-10-13 06:17:34,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:17:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:17:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:17:34,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:17:35,810 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 55 [2020-10-13 06:17:36,004 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:17:36,389 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 89 [2020-10-13 06:17:36,727 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2020-10-13 06:17:36,930 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 73 [2020-10-13 06:17:37,126 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2020-10-13 06:17:37,297 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2020-10-13 06:17:37,442 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2020-10-13 06:17:37,617 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:37,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:37,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:37,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:37,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:37,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:37,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:17:37,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:37,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:37,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:17:37,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:17:38,069 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2020-10-13 06:17:38,807 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 06:17:38,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917906263] [2020-10-13 06:17:38,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:17:38,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 06:17:38,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98818476] [2020-10-13 06:17:38,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 06:17:38,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:38,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 06:17:38,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-13 06:17:38,830 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 14 states. [2020-10-13 06:17:39,259 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-13 06:17:40,215 WARN L193 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 193 [2020-10-13 06:17:41,214 WARN L193 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 193 [2020-10-13 06:17:42,416 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 239 DAG size of output: 213 [2020-10-13 06:17:44,129 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 240 DAG size of output: 210 [2020-10-13 06:17:46,087 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 240 DAG size of output: 207 [2020-10-13 06:17:48,122 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 240 DAG size of output: 204 [2020-10-13 06:17:51,728 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 241 DAG size of output: 201 [2020-10-13 06:17:53,526 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 241 DAG size of output: 196 [2020-10-13 06:17:56,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:56,321 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:17:56,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:17:56,325 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 176 [2020-10-13 06:17:56,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:56,352 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:17:56,352 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:17:56,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-13 06:17:56,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:17:56,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:17:56,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:17:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:17:56,509 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 176 [2020-10-13 06:17:56,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:56,512 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:17:56,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 06:17:56,512 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:17:56,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-13 06:17:56,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:56,533 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, 1, 1, 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 06:17:56,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:17:56,534 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:56,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:56,534 INFO L82 PathProgramCache]: Analyzing trace with hash -367613946, now seen corresponding path program 1 times [2020-10-13 06:17:56,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:56,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114646121] [2020-10-13 06:17:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:56,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:57,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:58,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:01,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:01,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-13 06:18:01,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:18:01,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 06:18:01,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:01,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 06:18:01,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:18:01,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:18:01,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:02,875 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:02,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:02,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:02,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:02,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:02,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:02,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:18:02,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:02,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:18:02,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:03,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:18:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:03,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:03,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:03,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:18:03,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:03,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 06:18:03,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:03,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:18:03,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:18:03,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:18:03,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:03,504 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-13 06:18:04,020 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 89 [2020-10-13 06:18:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:18:04,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114646121] [2020-10-13 06:18:04,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:18:04,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 06:18:04,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333283211] [2020-10-13 06:18:04,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 06:18:04,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:04,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 06:18:04,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-13 06:18:04,705 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 17 states. [2020-10-13 06:18:05,000 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-13 06:18:05,769 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 76 [2020-10-13 06:18:06,250 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2020-10-13 06:18:06,787 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 79 [2020-10-13 06:18:07,612 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 172 [2020-10-13 06:18:08,478 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 180 [2020-10-13 06:18:08,793 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-10-13 06:18:10,006 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 231 DAG size of output: 179 [2020-10-13 06:18:12,029 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 234 DAG size of output: 178 [2020-10-13 06:18:12,403 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 88 [2020-10-13 06:18:15,470 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 235 DAG size of output: 177 [2020-10-13 06:18:19,067 WARN L193 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 176 [2020-10-13 06:18:20,121 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 174 [2020-10-13 06:18:23,175 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-10-13 06:18:23,371 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2020-10-13 06:18:24,008 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 153 [2020-10-13 06:18:28,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:28,434 INFO L93 Difference]: Finished difference Result 1230 states and 2015 transitions. [2020-10-13 06:18:28,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 06:18:28,435 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 187 [2020-10-13 06:18:28,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:28,445 INFO L225 Difference]: With dead ends: 1230 [2020-10-13 06:18:28,445 INFO L226 Difference]: Without dead ends: 987 [2020-10-13 06:18:28,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=267, Invalid=789, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 06:18:28,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-10-13 06:18:28,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 971. [2020-10-13 06:18:28,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-10-13 06:18:28,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1371 transitions. [2020-10-13 06:18:28,503 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1371 transitions. Word has length 187 [2020-10-13 06:18:28,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:28,504 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1371 transitions. [2020-10-13 06:18:28,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 06:18:28,504 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1371 transitions. [2020-10-13 06:18:28,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-13 06:18:28,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:28,509 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, 1, 1, 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 06:18:28,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:18:28,509 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:28,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:28,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1138190418, now seen corresponding path program 1 times [2020-10-13 06:18:28,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:28,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253420845] [2020-10-13 06:18:28,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:28,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:28,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:30,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:30,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-13 06:18:30,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:18:30,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1621 [2020-10-13 06:18:30,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:30,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:30,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:18:30,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-13 06:18:30,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:30,497 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:30,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:30,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:30,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:30,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:30,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:30,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:18:30,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:30,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:30,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:18:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:30,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:30,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:30,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:18:30,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:30,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:18:30,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:30,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:30,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:30,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:18:30,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 06:18:30,873 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 06:18:30,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253420845] [2020-10-13 06:18:30,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:18:30,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:18:30,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760893731] [2020-10-13 06:18:30,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:18:30,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:30,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:18:30,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:18:30,878 INFO L87 Difference]: Start difference. First operand 971 states and 1371 transitions. Second operand 5 states. [2020-10-13 06:18:31,396 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:18:34,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:34,461 INFO L93 Difference]: Finished difference Result 2496 states and 3722 transitions. [2020-10-13 06:18:34,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:18:34,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-13 06:18:34,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:34,473 INFO L225 Difference]: With dead ends: 2496 [2020-10-13 06:18:34,474 INFO L226 Difference]: Without dead ends: 1646 [2020-10-13 06:18:34,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:18:34,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2020-10-13 06:18:34,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1624. [2020-10-13 06:18:34,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1624 states. [2020-10-13 06:18:34,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2394 transitions. [2020-10-13 06:18:34,551 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2394 transitions. Word has length 197 [2020-10-13 06:18:34,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:34,551 INFO L479 AbstractCegarLoop]: Abstraction has 1624 states and 2394 transitions. [2020-10-13 06:18:34,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:18:34,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2394 transitions. [2020-10-13 06:18:34,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-13 06:18:34,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:34,559 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:34,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:18:34,559 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:34,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:34,560 INFO L82 PathProgramCache]: Analyzing trace with hash 665769897, now seen corresponding path program 1 times [2020-10-13 06:18:34,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:34,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121087256] [2020-10-13 06:18:34,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:34,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:35,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:35,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:36,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:36,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:36,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-13 06:18:36,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:18:36,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2109 [2020-10-13 06:18:36,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:18:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:18:36,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:36,909 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:36,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:36,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:36,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:36,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:36,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:36,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:18:36,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:36,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:36,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:36,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:36,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 06:18:37,043 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:18:37,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:18:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:37,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:37,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:37,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:18:37,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:37,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:18:37,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:37,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:37,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:37,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:18:37,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:37,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:18:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:37,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:37,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:37,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:18:37,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:37,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 06:18:37,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:18:37,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:18:37,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:37,303 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:18:37,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121087256] [2020-10-13 06:18:37,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:18:37,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:18:37,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096158971] [2020-10-13 06:18:37,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:18:37,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:37,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:18:37,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:18:37,305 INFO L87 Difference]: Start difference. First operand 1624 states and 2394 transitions. Second operand 7 states. [2020-10-13 06:18:37,653 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:18:38,377 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:18:43,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:43,045 INFO L93 Difference]: Finished difference Result 5711 states and 10027 transitions. [2020-10-13 06:18:43,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:18:43,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-10-13 06:18:43,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:43,083 INFO L225 Difference]: With dead ends: 5711 [2020-10-13 06:18:43,084 INFO L226 Difference]: Without dead ends: 4208 [2020-10-13 06:18:43,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:18:43,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4208 states. [2020-10-13 06:18:43,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4208 to 4079. [2020-10-13 06:18:43,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4079 states. [2020-10-13 06:18:43,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4079 states to 4079 states and 6224 transitions. [2020-10-13 06:18:43,309 INFO L78 Accepts]: Start accepts. Automaton has 4079 states and 6224 transitions. Word has length 207 [2020-10-13 06:18:43,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:43,310 INFO L479 AbstractCegarLoop]: Abstraction has 4079 states and 6224 transitions. [2020-10-13 06:18:43,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:18:43,310 INFO L276 IsEmpty]: Start isEmpty. Operand 4079 states and 6224 transitions. [2020-10-13 06:18:43,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-13 06:18:43,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:43,323 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:43,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:18:43,323 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:43,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:43,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1883570954, now seen corresponding path program 1 times [2020-10-13 06:18:43,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:43,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990355829] [2020-10-13 06:18:43,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:43,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:44,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:47,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:47,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-13 06:18:47,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:18:47,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3979 [2020-10-13 06:18:47,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:18:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:18:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:18:47,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:47,585 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:47,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:47,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:47,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:47,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:47,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:47,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:18:47,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:47,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:47,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:47,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:18:47,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:47,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:18:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:47,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:47,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:47,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:18:47,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:47,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 06:18:47,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:47,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:47,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:18:47,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:18:47,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:18:47,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990355829] [2020-10-13 06:18:47,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:18:47,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:18:47,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932910644] [2020-10-13 06:18:47,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:18:47,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:47,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:18:47,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:18:47,882 INFO L87 Difference]: Start difference. First operand 4079 states and 6224 transitions. Second operand 7 states. [2020-10-13 06:18:48,062 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:18:50,874 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:18:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:52,197 INFO L93 Difference]: Finished difference Result 11561 states and 19762 transitions. [2020-10-13 06:18:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:18:52,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-10-13 06:18:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:52,258 INFO L225 Difference]: With dead ends: 11561 [2020-10-13 06:18:52,258 INFO L226 Difference]: Without dead ends: 7607 [2020-10-13 06:18:52,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:18:52,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7607 states. [2020-10-13 06:18:52,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7607 to 7435. [2020-10-13 06:18:52,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7435 states. [2020-10-13 06:18:52,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7435 states to 7435 states and 11613 transitions. [2020-10-13 06:18:52,623 INFO L78 Accepts]: Start accepts. Automaton has 7435 states and 11613 transitions. Word has length 208 [2020-10-13 06:18:52,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:52,624 INFO L479 AbstractCegarLoop]: Abstraction has 7435 states and 11613 transitions. [2020-10-13 06:18:52,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:18:52,624 INFO L276 IsEmpty]: Start isEmpty. Operand 7435 states and 11613 transitions. [2020-10-13 06:18:52,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-13 06:18:52,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:52,643 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 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 06:18:52,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:18:52,644 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:52,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:52,644 INFO L82 PathProgramCache]: Analyzing trace with hash 711565466, now seen corresponding path program 1 times [2020-10-13 06:18:52,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:52,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970579260] [2020-10-13 06:18:52,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:52,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:53,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:54,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:55,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:55,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-13 06:18:55,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:18:55,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2742 [2020-10-13 06:18:55,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:55,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:55,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:18:55,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:18:55,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:55,698 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:55,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:55,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:55,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:55,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:55,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:55,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:18:55,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:55,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:55,856 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:18:55,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:18:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:55,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:55,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:55,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:18:55,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:55,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 06:18:55,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:55,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:55,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:55,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:18:55,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:55,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:18:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:55,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:56,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:56,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:18:56,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:56,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 06:18:56,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:56,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:56,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:18:56,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:18:56,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:18:56,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970579260] [2020-10-13 06:18:56,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:18:56,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:18:56,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835003278] [2020-10-13 06:18:56,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:18:56,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:56,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:18:56,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:18:56,145 INFO L87 Difference]: Start difference. First operand 7435 states and 11613 transitions. Second operand 7 states. [2020-10-13 06:18:56,701 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:18:57,666 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:19:01,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:01,638 INFO L93 Difference]: Finished difference Result 16898 states and 28966 transitions. [2020-10-13 06:19:01,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:19:01,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2020-10-13 06:19:01,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:01,762 INFO L225 Difference]: With dead ends: 16898 [2020-10-13 06:19:01,763 INFO L226 Difference]: Without dead ends: 11562 [2020-10-13 06:19:01,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:19:01,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11562 states. [2020-10-13 06:19:02,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11562 to 11156. [2020-10-13 06:19:02,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11156 states. [2020-10-13 06:19:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11156 states to 11156 states and 17383 transitions. [2020-10-13 06:19:02,394 INFO L78 Accepts]: Start accepts. Automaton has 11156 states and 17383 transitions. Word has length 211 [2020-10-13 06:19:02,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:02,395 INFO L479 AbstractCegarLoop]: Abstraction has 11156 states and 17383 transitions. [2020-10-13 06:19:02,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:02,395 INFO L276 IsEmpty]: Start isEmpty. Operand 11156 states and 17383 transitions. [2020-10-13 06:19:02,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-13 06:19:02,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:02,412 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:02,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:19:02,412 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:02,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:02,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1123694646, now seen corresponding path program 1 times [2020-10-13 06:19:02,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:02,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454173918] [2020-10-13 06:19:02,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:02,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:02,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:03,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:03,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-13 06:19:03,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:19:03,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1405 [2020-10-13 06:19:03,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:03,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:19:03,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-13 06:19:03,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:19:04,178 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:04,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:04,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:04,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:04,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:04,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:04,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:19:04,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:04,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:04,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:04,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:04,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:04,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:19:04,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:04,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 06:19:04,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:19:04,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:04,512 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:19:04,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454173918] [2020-10-13 06:19:04,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:04,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:19:04,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909582297] [2020-10-13 06:19:04,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:19:04,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:04,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:19:04,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:19:04,515 INFO L87 Difference]: Start difference. First operand 11156 states and 17383 transitions. Second operand 5 states. [2020-10-13 06:19:04,847 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:19:08,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:08,042 INFO L93 Difference]: Finished difference Result 27119 states and 43833 transitions. [2020-10-13 06:19:08,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:19:08,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-10-13 06:19:08,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:08,115 INFO L225 Difference]: With dead ends: 27119 [2020-10-13 06:19:08,115 INFO L226 Difference]: Without dead ends: 16536 [2020-10-13 06:19:08,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:19:08,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16536 states. [2020-10-13 06:19:08,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16536 to 16463. [2020-10-13 06:19:08,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16463 states. [2020-10-13 06:19:08,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16463 states to 16463 states and 26413 transitions. [2020-10-13 06:19:08,745 INFO L78 Accepts]: Start accepts. Automaton has 16463 states and 26413 transitions. Word has length 211 [2020-10-13 06:19:08,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:08,746 INFO L479 AbstractCegarLoop]: Abstraction has 16463 states and 26413 transitions. [2020-10-13 06:19:08,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:19:08,746 INFO L276 IsEmpty]: Start isEmpty. Operand 16463 states and 26413 transitions. [2020-10-13 06:19:08,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-13 06:19:08,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:08,780 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:08,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:19:08,780 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:08,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:08,781 INFO L82 PathProgramCache]: Analyzing trace with hash -832709644, now seen corresponding path program 1 times [2020-10-13 06:19:08,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:08,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439434066] [2020-10-13 06:19:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:08,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:09,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:10,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:12,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:12,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-13 06:19:12,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:19:12,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3491 [2020-10-13 06:19:12,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:12,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:12,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:19:12,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:19:12,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:12,519 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:12,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:12,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:12,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:12,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:12,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:12,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:19:12,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:12,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:12,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:12,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:12,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:12,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:12,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:12,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:12,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:19:12,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:12,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:19:12,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:19:12,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:12,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:19:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:12,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:12,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:12,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:19:12,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:12,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 06:19:12,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:12,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:12,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:12,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:19:12,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:19:12,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439434066] [2020-10-13 06:19:12,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:12,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:19:12,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028181908] [2020-10-13 06:19:12,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:12,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:12,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:12,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:12,895 INFO L87 Difference]: Start difference. First operand 16463 states and 26413 transitions. Second operand 7 states. [2020-10-13 06:19:13,249 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:19:15,217 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:19:16,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:16,968 INFO L93 Difference]: Finished difference Result 40778 states and 70292 transitions. [2020-10-13 06:19:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:19:16,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-13 06:19:16,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:17,085 INFO L225 Difference]: With dead ends: 40778 [2020-10-13 06:19:17,085 INFO L226 Difference]: Without dead ends: 24452 [2020-10-13 06:19:17,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:19:17,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24452 states. [2020-10-13 06:19:18,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24452 to 24106. [2020-10-13 06:19:18,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24106 states. [2020-10-13 06:19:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24106 states to 24106 states and 37674 transitions. [2020-10-13 06:19:18,109 INFO L78 Accepts]: Start accepts. Automaton has 24106 states and 37674 transitions. Word has length 255 [2020-10-13 06:19:18,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:18,109 INFO L479 AbstractCegarLoop]: Abstraction has 24106 states and 37674 transitions. [2020-10-13 06:19:18,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:18,109 INFO L276 IsEmpty]: Start isEmpty. Operand 24106 states and 37674 transitions. [2020-10-13 06:19:18,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-13 06:19:18,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:18,160 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:18,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:19:18,161 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:18,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:18,161 INFO L82 PathProgramCache]: Analyzing trace with hash 561661656, now seen corresponding path program 1 times [2020-10-13 06:19:18,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:18,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783331178] [2020-10-13 06:19:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:18,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:18,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:19,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:20,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:20,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-13 06:19:20,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:19:20,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2680 [2020-10-13 06:19:20,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:20,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:20,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:19:20,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:19:20,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:21,123 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:21,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:21,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:21,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:21,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:21,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:21,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:19:21,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:21,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:21,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:21,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:21,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:19:21,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:21,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:21,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:21,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:19:21,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:21,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 06:19:21,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:21,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:21,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:21,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:19:21,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:21,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:19:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:21,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:21,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:21,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:19:21,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:21,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 06:19:21,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:21,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:21,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:21,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:19:21,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:21,657 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:19:21,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783331178] [2020-10-13 06:19:21,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:21,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:19:21,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662578070] [2020-10-13 06:19:21,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:21,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:21,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:21,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:21,660 INFO L87 Difference]: Start difference. First operand 24106 states and 37674 transitions. Second operand 7 states. [2020-10-13 06:19:21,911 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:19:22,309 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:19:26,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:26,234 INFO L93 Difference]: Finished difference Result 65961 states and 103050 transitions. [2020-10-13 06:19:26,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:19:26,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-10-13 06:19:26,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:26,420 INFO L225 Difference]: With dead ends: 65961 [2020-10-13 06:19:26,420 INFO L226 Difference]: Without dead ends: 42024 [2020-10-13 06:19:26,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:19:26,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42024 states. [2020-10-13 06:19:27,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42024 to 41747. [2020-10-13 06:19:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41747 states. [2020-10-13 06:19:27,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41747 states to 41747 states and 61727 transitions. [2020-10-13 06:19:27,841 INFO L78 Accepts]: Start accepts. Automaton has 41747 states and 61727 transitions. Word has length 269 [2020-10-13 06:19:27,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:27,841 INFO L479 AbstractCegarLoop]: Abstraction has 41747 states and 61727 transitions. [2020-10-13 06:19:27,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:27,841 INFO L276 IsEmpty]: Start isEmpty. Operand 41747 states and 61727 transitions. [2020-10-13 06:19:27,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-13 06:19:27,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:27,886 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:19:27,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:19:27,887 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:27,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:27,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1279701201, now seen corresponding path program 1 times [2020-10-13 06:19:27,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:27,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870722244] [2020-10-13 06:19:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:28,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:28,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:30,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:32,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:32,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-13 06:19:32,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:19:32,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4256 [2020-10-13 06:19:32,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:32,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:19:32,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-13 06:19:32,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:32,436 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:32,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:32,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:32,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:32,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:32,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:32,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:19:32,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:32,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:32,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:32,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:32,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:32,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:32,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:32,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:19:32,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:32,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 06:19:32,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:32,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:32,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:32,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:19:32,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:32,776 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 102 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:19:32,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870722244] [2020-10-13 06:19:32,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:32,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:19:32,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621613474] [2020-10-13 06:19:32,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:19:32,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:32,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:19:32,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:19:32,779 INFO L87 Difference]: Start difference. First operand 41747 states and 61727 transitions. Second operand 5 states. [2020-10-13 06:19:32,948 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:19:35,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:35,689 INFO L93 Difference]: Finished difference Result 55426 states and 81241 transitions. [2020-10-13 06:19:35,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:19:35,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 282 [2020-10-13 06:19:35,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:35,858 INFO L225 Difference]: With dead ends: 55426 [2020-10-13 06:19:35,858 INFO L226 Difference]: Without dead ends: 41027 [2020-10-13 06:19:35,907 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 06:19:35,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41027 states. [2020-10-13 06:19:36,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41027 to 40872. [2020-10-13 06:19:36,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40872 states. [2020-10-13 06:19:36,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40872 states to 40872 states and 59371 transitions. [2020-10-13 06:19:36,965 INFO L78 Accepts]: Start accepts. Automaton has 40872 states and 59371 transitions. Word has length 282 [2020-10-13 06:19:36,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:36,966 INFO L479 AbstractCegarLoop]: Abstraction has 40872 states and 59371 transitions. [2020-10-13 06:19:36,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:19:36,966 INFO L276 IsEmpty]: Start isEmpty. Operand 40872 states and 59371 transitions. [2020-10-13 06:19:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-13 06:19:37,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:37,019 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:37,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:19:37,019 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:37,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:37,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1082925809, now seen corresponding path program 1 times [2020-10-13 06:19:37,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:37,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544278229] [2020-10-13 06:19:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:37,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:37,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:37,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:40,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:42,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:42,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-13 06:19:42,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:19:42,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 06:19:42,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:42,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:42,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:19:42,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:19:42,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:42,464 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:42,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:42,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:42,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:42,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:42,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:42,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:19:42,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:42,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:42,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:42,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:42,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:42,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:42,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:42,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:42,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:19:42,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:19:42,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:19:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:42,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:19:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:42,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:42,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:42,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:19:42,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:42,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 06:19:42,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:19:42,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:42,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 06:19:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:42,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:42,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:42,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:19:42,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:42,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 06:19:42,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:42,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:42,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 06:19:42,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:42,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 124 proven. 31 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 06:19:42,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544278229] [2020-10-13 06:19:42,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:42,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:19:42,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87425904] [2020-10-13 06:19:42,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:42,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:42,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:42,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:42,845 INFO L87 Difference]: Start difference. First operand 40872 states and 59371 transitions. Second operand 7 states. [2020-10-13 06:19:43,324 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:19:44,621 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:19:47,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:47,285 INFO L93 Difference]: Finished difference Result 104846 states and 161687 transitions. [2020-10-13 06:19:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:19:47,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 287 [2020-10-13 06:19:47,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:47,544 INFO L225 Difference]: With dead ends: 104846 [2020-10-13 06:19:47,544 INFO L226 Difference]: Without dead ends: 62193 [2020-10-13 06:19:47,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:19:47,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62193 states. [2020-10-13 06:19:50,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62193 to 59644. [2020-10-13 06:19:50,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59644 states. [2020-10-13 06:19:50,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59644 states to 59644 states and 80282 transitions. [2020-10-13 06:19:50,915 INFO L78 Accepts]: Start accepts. Automaton has 59644 states and 80282 transitions. Word has length 287 [2020-10-13 06:19:50,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:50,916 INFO L479 AbstractCegarLoop]: Abstraction has 59644 states and 80282 transitions. [2020-10-13 06:19:50,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 59644 states and 80282 transitions. [2020-10-13 06:19:50,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-13 06:19:50,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:50,984 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:19:50,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:19:50,984 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:50,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:50,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1020492772, now seen corresponding path program 1 times [2020-10-13 06:19:50,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:50,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554212839] [2020-10-13 06:19:50,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:51,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:51,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:51,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:52,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:54,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:54,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-13 06:19:54,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:19:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3668 [2020-10-13 06:19:54,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:19:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 06:19:54,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:54,968 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:54,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:54,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:54,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:54,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:54,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:54,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:19:54,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:54,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:54,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:54,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:55,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:55,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:55,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:55,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:19:55,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:55,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 06:19:55,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:55,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:55,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:55,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:19:55,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:55,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:19:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:55,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:55,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:55,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 06:19:55,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:55,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 06:19:55,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:19:55,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:55,389 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:19:55,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554212839] [2020-10-13 06:19:55,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:55,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:19:55,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812629653] [2020-10-13 06:19:55,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:55,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:55,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:55,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:55,391 INFO L87 Difference]: Start difference. First operand 59644 states and 80282 transitions. Second operand 7 states. [2020-10-13 06:19:55,552 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-13 06:19:56,820 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:19:59,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:59,076 INFO L93 Difference]: Finished difference Result 134997 states and 181413 transitions. [2020-10-13 06:19:59,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:19:59,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2020-10-13 06:19:59,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:59,331 INFO L225 Difference]: With dead ends: 134997 [2020-10-13 06:19:59,332 INFO L226 Difference]: Without dead ends: 75470 [2020-10-13 06:19:59,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:19:59,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75470 states. [2020-10-13 06:20:00,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75470 to 70501. [2020-10-13 06:20:00,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70501 states. [2020-10-13 06:20:01,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70501 states to 70501 states and 93353 transitions. [2020-10-13 06:20:01,119 INFO L78 Accepts]: Start accepts. Automaton has 70501 states and 93353 transitions. Word has length 313 [2020-10-13 06:20:01,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:01,119 INFO L479 AbstractCegarLoop]: Abstraction has 70501 states and 93353 transitions. [2020-10-13 06:20:01,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:01,119 INFO L276 IsEmpty]: Start isEmpty. Operand 70501 states and 93353 transitions. [2020-10-13 06:20:01,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-13 06:20:01,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:01,172 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:01,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:20:01,173 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:01,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:01,173 INFO L82 PathProgramCache]: Analyzing trace with hash 497909625, now seen corresponding path program 1 times [2020-10-13 06:20:01,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:01,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687232032] [2020-10-13 06:20:01,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:01,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:01,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:02,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:06,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:06,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-13 06:20:06,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:20:06,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 06:20:06,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:06,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:06,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:20:06,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:20:06,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:06,434 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:06,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:06,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:06,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:06,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:06,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:06,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:20:06,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:06,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:06,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:06,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:06,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:06,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:06,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:06,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:06,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:20:06,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:06,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:20:06,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:06,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:06,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:06,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:20:06,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:06,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:20:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:06,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:06,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:06,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:20:06,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:06,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 06:20:06,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:06,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:06,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:06,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:20:06,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:06,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 06:20:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:06,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:06,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:06,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:20:06,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:06,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:20:06,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:06,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:06,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 06:20:06,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:06,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:06,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 06:20:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:06,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:06,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:06,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:20:06,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:06,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:20:06,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:06,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:06,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 06:20:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:06,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 150 proven. 28 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-13 06:20:06,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687232032] [2020-10-13 06:20:06,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:06,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:06,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68676176] [2020-10-13 06:20:06,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:06,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:06,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:06,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:06,864 INFO L87 Difference]: Start difference. First operand 70501 states and 93353 transitions. Second operand 7 states. [2020-10-13 06:20:07,135 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:20:07,538 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:20:11,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:11,169 INFO L93 Difference]: Finished difference Result 147482 states and 194181 transitions. [2020-10-13 06:20:11,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:20:11,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 317 [2020-10-13 06:20:11,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:11,417 INFO L225 Difference]: With dead ends: 147482 [2020-10-13 06:20:11,417 INFO L226 Difference]: Without dead ends: 79573 [2020-10-13 06:20:11,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:20:11,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79573 states. [2020-10-13 06:20:12,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79573 to 79027. [2020-10-13 06:20:12,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79027 states. [2020-10-13 06:20:13,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79027 states to 79027 states and 103503 transitions. [2020-10-13 06:20:13,027 INFO L78 Accepts]: Start accepts. Automaton has 79027 states and 103503 transitions. Word has length 317 [2020-10-13 06:20:13,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:13,027 INFO L479 AbstractCegarLoop]: Abstraction has 79027 states and 103503 transitions. [2020-10-13 06:20:13,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:13,027 INFO L276 IsEmpty]: Start isEmpty. Operand 79027 states and 103503 transitions. [2020-10-13 06:20:13,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-13 06:20:13,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:13,088 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:20:13,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:20:13,088 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:13,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:13,088 INFO L82 PathProgramCache]: Analyzing trace with hash -427100627, now seen corresponding path program 1 times [2020-10-13 06:20:13,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:13,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334202457] [2020-10-13 06:20:13,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:13,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:13,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:14,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:17,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:19,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:19,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 06:20:19,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:20:19,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6771 [2020-10-13 06:20:19,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:19,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:19,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:20:19,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:20:19,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:20,089 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:20,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:20,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:20,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:20,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:20,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:20:20,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:20,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:20,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:20,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:20,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:20:20,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:20,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 06:20:20,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:20,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:20,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:20,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:20:20,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:20,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:20:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:20,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:20,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:20,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:20:20,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:20,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:20:20,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:20,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:20,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:20,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:20:20,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:20,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 06:20:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:20,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:20,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:20,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 06:20:20,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:20,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:20:20,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 06:20:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:20,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 145 proven. 7 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-13 06:20:20,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334202457] [2020-10-13 06:20:20,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:20,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:20,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415126975] [2020-10-13 06:20:20,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:20,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:20,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:20,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:20,536 INFO L87 Difference]: Start difference. First operand 79027 states and 103503 transitions. Second operand 7 states. [2020-10-13 06:20:21,333 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:20:21,568 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:20:25,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:25,249 INFO L93 Difference]: Finished difference Result 167635 states and 227437 transitions. [2020-10-13 06:20:25,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:20:25,250 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 323 [2020-10-13 06:20:25,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:25,618 INFO L225 Difference]: With dead ends: 167635 [2020-10-13 06:20:25,619 INFO L226 Difference]: Without dead ends: 92385 [2020-10-13 06:20:25,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:20:25,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92385 states. [2020-10-13 06:20:27,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92385 to 88616. [2020-10-13 06:20:27,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88616 states. [2020-10-13 06:20:27,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88616 states to 88616 states and 116381 transitions. [2020-10-13 06:20:27,739 INFO L78 Accepts]: Start accepts. Automaton has 88616 states and 116381 transitions. Word has length 323 [2020-10-13 06:20:27,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:27,739 INFO L479 AbstractCegarLoop]: Abstraction has 88616 states and 116381 transitions. [2020-10-13 06:20:27,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:27,740 INFO L276 IsEmpty]: Start isEmpty. Operand 88616 states and 116381 transitions. [2020-10-13 06:20:27,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-13 06:20:27,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:27,807 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:27,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:20:27,808 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:27,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:27,808 INFO L82 PathProgramCache]: Analyzing trace with hash -540093123, now seen corresponding path program 1 times [2020-10-13 06:20:27,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:27,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707385660] [2020-10-13 06:20:27,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:28,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:30,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:31,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:32,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:32,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-13 06:20:32,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:20:32,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 06:20:32,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:32,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 06:20:32,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:20:32,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-13 06:20:32,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:33,111 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:33,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:33,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:33,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:33,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:33,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:33,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:20:33,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:20:33,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:33,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:33,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:33,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:33,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:20:33,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:33,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-13 06:20:33,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:33,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:20:33,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:33,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:20:33,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:33,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:20:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:33,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:33,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:33,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:20:33,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:33,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 06:20:33,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:33,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:33,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:33,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:20:33,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:20:35,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707385660] [2020-10-13 06:20:35,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:35,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 06:20:35,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367820509] [2020-10-13 06:20:35,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 06:20:35,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:35,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 06:20:35,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:20:35,407 INFO L87 Difference]: Start difference. First operand 88616 states and 116381 transitions. Second operand 10 states. [2020-10-13 06:20:35,583 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:20:36,068 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:20:37,295 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2020-10-13 06:20:38,826 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:20:39,418 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 129 [2020-10-13 06:20:42,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:42,144 INFO L93 Difference]: Finished difference Result 221189 states and 293062 transitions. [2020-10-13 06:20:42,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 06:20:42,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 334 [2020-10-13 06:20:42,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:42,508 INFO L225 Difference]: With dead ends: 221189 [2020-10-13 06:20:42,508 INFO L226 Difference]: Without dead ends: 134195 [2020-10-13 06:20:42,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:20:42,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134195 states. [2020-10-13 06:20:44,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134195 to 128609. [2020-10-13 06:20:44,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128609 states. [2020-10-13 06:20:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128609 states to 128609 states and 165265 transitions. [2020-10-13 06:20:45,107 INFO L78 Accepts]: Start accepts. Automaton has 128609 states and 165265 transitions. Word has length 334 [2020-10-13 06:20:45,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:45,107 INFO L479 AbstractCegarLoop]: Abstraction has 128609 states and 165265 transitions. [2020-10-13 06:20:45,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 06:20:45,108 INFO L276 IsEmpty]: Start isEmpty. Operand 128609 states and 165265 transitions. [2020-10-13 06:20:45,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-13 06:20:45,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:45,220 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:45,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:20:45,221 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:45,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:45,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1376652449, now seen corresponding path program 1 times [2020-10-13 06:20:45,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:45,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99467675] [2020-10-13 06:20:45,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:45,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:45,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:46,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:47,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:48,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:48,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:50,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:50,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-13 06:20:50,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:20:50,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 06:20:50,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:50,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:50,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:20:50,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 06:20:50,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:50,553 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:50,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:50,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:50,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:50,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:50,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:50,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:20:50,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:50,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:50,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:50,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:50,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:50,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:50,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:50,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:50,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:20:50,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:50,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 06:20:50,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:50,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:50,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:50,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:20:50,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:52,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:20:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:52,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:52,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:52,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:20:52,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:52,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 06:20:52,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 06:20:52,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 241 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:20:53,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99467675] [2020-10-13 06:20:53,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:53,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:20:53,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126184595] [2020-10-13 06:20:53,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:20:53,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:53,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:20:53,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:20:53,047 INFO L87 Difference]: Start difference. First operand 128609 states and 165265 transitions. Second operand 8 states. [2020-10-13 06:20:53,797 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:20:54,720 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:20:55,182 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 132