/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=BIGGEST --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_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:23:02,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:23:02,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:23:02,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:23:02,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:23:02,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:23:02,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:23:02,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:23:02,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:23:02,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:23:02,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:23:02,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:23:02,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:23:02,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:23:02,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:23:02,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:23:02,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:23:02,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:23:02,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:23:02,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:23:02,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:23:02,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:23:02,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:23:02,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:23:02,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:23:02,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:23:02,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:23:02,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:23:02,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:23:02,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:23:02,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:23:02,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:23:02,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:23:02,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:23:02,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:23:02,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:23:02,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:23:02,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:23:02,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:23:02,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:23:02,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:23:02,299 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 [2020-10-12 11:23:02,323 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:23:02,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:23:02,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:23:02,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:23:02,327 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:23:02,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:23:02,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:23:02,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:23:02,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:23:02,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:23:02,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:23:02,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:23:02,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:23:02,332 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:23:02,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:23:02,332 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:23:02,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:23:02,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:23:02,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:23:02,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:23:02,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:23:02,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:23:02,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:23:02,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:23:02,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:23:02,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:23:02,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:23:02,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:23:02,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:23:02,338 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:23:02,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:23:02,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:23:02,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:23:02,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:23:02,666 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:23:02,667 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label29.c [2020-10-12 11:23:02,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a4fc3a21/6bebf7b132034f50a41817b38059a6b9/FLAGae0ad0c6c [2020-10-12 11:23:03,418 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:23:03,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label29.c [2020-10-12 11:23:03,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a4fc3a21/6bebf7b132034f50a41817b38059a6b9/FLAGae0ad0c6c [2020-10-12 11:23:03,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a4fc3a21/6bebf7b132034f50a41817b38059a6b9 [2020-10-12 11:23:03,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:23:03,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:23:03,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:23:03,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:23:03,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:23:03,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:23:03" (1/1) ... [2020-10-12 11:23:03,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5211d524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:23:03, skipping insertion in model container [2020-10-12 11:23:03,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:23:03" (1/1) ... [2020-10-12 11:23:03,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:23:03,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:23:04,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:23:04,623 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:23:04,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:23:04,895 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:23:04,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:23:04 WrapperNode [2020-10-12 11:23:04,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:23:04,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:23:04,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:23:04,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:23:04,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:23:04" (1/1) ... [2020-10-12 11:23:04,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:23:04" (1/1) ... [2020-10-12 11:23:04,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:23:04" (1/1) ... [2020-10-12 11:23:04,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:23:04" (1/1) ... [2020-10-12 11:23:05,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:23:04" (1/1) ... [2020-10-12 11:23:05,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:23:04" (1/1) ... [2020-10-12 11:23:05,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:23:04" (1/1) ... [2020-10-12 11:23:05,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:23:05,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:23:05,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:23:05,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:23:05,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:23:04" (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 [2020-10-12 11:23:05,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:23:05,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:23:05,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:23:05,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:23:05,167 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:23:05,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:23:05,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:23:05,168 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:23:05,168 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:23:05,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:23:05,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:23:06,979 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:23:06,979 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:23:06,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:23:06 BoogieIcfgContainer [2020-10-12 11:23:06,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:23:06,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:23:06,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:23:06,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:23:06,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:23:03" (1/3) ... [2020-10-12 11:23:06,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773717a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:23:06, skipping insertion in model container [2020-10-12 11:23:06,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:23:04" (2/3) ... [2020-10-12 11:23:06,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773717a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:23:06, skipping insertion in model container [2020-10-12 11:23:06,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:23:06" (3/3) ... [2020-10-12 11:23:06,995 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label29.c [2020-10-12 11:23:07,005 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:23:07,014 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:23:07,028 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:23:07,054 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:23:07,054 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:23:07,054 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:23:07,055 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:23:07,055 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:23:07,055 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:23:07,055 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:23:07,055 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:23:07,081 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-12 11:23:07,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-12 11:23:07,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:23:07,104 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:23:07,104 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:23:07,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:23:07,111 INFO L82 PathProgramCache]: Analyzing trace with hash -30261395, now seen corresponding path program 1 times [2020-10-12 11:23:07,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:23:07,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976606836] [2020-10-12 11:23:07,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:23:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:23:07,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:08,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:12,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:23:12,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-12 11:23:12,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:23:12,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4909 [2020-10-12 11:23:12,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:23:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:23:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:23:12,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:23:12,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:23:13,787 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-12 11:23:13,910 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-12 11:23:14,186 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 86 [2020-10-12 11:23:14,541 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 86 [2020-10-12 11:23:15,058 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 95 [2020-10-12 11:23:15,589 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 89 [2020-10-12 11:23:16,050 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 83 [2020-10-12 11:23:16,548 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 76 [2020-10-12 11:23:16,898 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 59 [2020-10-12 11:23:17,043 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:23:17,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:23:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:23:17,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:17,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:23:17,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:23:17,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:23:17,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:23:17,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:23:17,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:23:17,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:23:17,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:23:17,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:23:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:23:17,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976606836] [2020-10-12 11:23:17,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:23:17,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 11:23:18,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627264442] [2020-10-12 11:23:18,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 11:23:18,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:23:18,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 11:23:18,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:23:18,022 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-12 11:23:18,416 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 11:23:19,242 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 188 [2020-10-12 11:23:20,026 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-10-12 11:23:20,866 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 208 [2020-10-12 11:23:22,238 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 230 DAG size of output: 203 [2020-10-12 11:23:23,922 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 230 DAG size of output: 200 [2020-10-12 11:23:25,705 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 234 DAG size of output: 196 [2020-10-12 11:23:29,280 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 236 DAG size of output: 193 [2020-10-12 11:23:30,751 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 238 DAG size of output: 189 [2020-10-12 11:23:33,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:23:33,573 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-12 11:23:33,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:23:33,575 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 184 [2020-10-12 11:23:33,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:23:33,592 INFO L225 Difference]: With dead ends: 737 [2020-10-12 11:23:33,592 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 11:23:33,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-12 11:23:33,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 11:23:33,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-12 11:23:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 11:23:33,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-12 11:23:33,678 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 184 [2020-10-12 11:23:33,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:23:33,682 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-12 11:23:33,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 11:23:33,682 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-12 11:23:33,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-12 11:23:33,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:23:33,701 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:23:33,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:23:33,702 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:23:33,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:23:33,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1163875162, now seen corresponding path program 1 times [2020-10-12 11:23:33,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:23:33,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104742823] [2020-10-12 11:23:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:23:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:23:33,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:34,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:35,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:37,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:23:37,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-12 11:23:37,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:23:37,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4149 [2020-10-12 11:23:37,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:23:37,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:23:37,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:23:37,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 11:23:37,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:23:39,274 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2020-10-12 11:23:39,535 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2020-10-12 11:23:39,713 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2020-10-12 11:23:39,877 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2020-10-12 11:23:40,079 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2020-10-12 11:23:40,257 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:23:40,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:23:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:23:40,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:40,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:23:40,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:23:40,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:23:40,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:23:40,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:23:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:23:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:23:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:23:40,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:23:40,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:23:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:23:40,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:40,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:23:40,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:23:40,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:23:40,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 11:23:40,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:23:40,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:23:40,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:23:40,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:23:40,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:23:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:23:41,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104742823] [2020-10-12 11:23:41,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:23:41,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 11:23:41,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469298421] [2020-10-12 11:23:41,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 11:23:41,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:23:41,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 11:23:41,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:23:41,128 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-12 11:23:41,395 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-12 11:23:41,937 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 86 [2020-10-12 11:23:42,421 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2020-10-12 11:23:42,970 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 165 [2020-10-12 11:23:43,564 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 173 [2020-10-12 11:23:44,531 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 172 [2020-10-12 11:23:46,203 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 171 [2020-10-12 11:23:48,482 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 170 [2020-10-12 11:23:51,098 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 169 [2020-10-12 11:23:51,809 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 167 [2020-10-12 11:23:53,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:23:53,676 INFO L93 Difference]: Finished difference Result 757 states and 1213 transitions. [2020-10-12 11:23:53,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:23:53,680 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 195 [2020-10-12 11:23:53,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:23:53,687 INFO L225 Difference]: With dead ends: 757 [2020-10-12 11:23:53,687 INFO L226 Difference]: Without dead ends: 514 [2020-10-12 11:23:53,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2020-10-12 11:23:53,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-12 11:23:53,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 510. [2020-10-12 11:23:53,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-10-12 11:23:53,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 678 transitions. [2020-10-12 11:23:53,740 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 678 transitions. Word has length 195 [2020-10-12 11:23:53,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:23:53,740 INFO L479 AbstractCegarLoop]: Abstraction has 510 states and 678 transitions. [2020-10-12 11:23:53,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 11:23:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 678 transitions. [2020-10-12 11:23:53,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-12 11:23:53,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:23:53,755 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:23:53,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:23:53,755 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:23:53,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:23:53,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1410178830, now seen corresponding path program 1 times [2020-10-12 11:23:53,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:23:53,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37507438] [2020-10-12 11:23:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:23:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:23:53,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:54,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:54,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:55,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:23:55,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-12 11:23:55,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:23:55,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1807 [2020-10-12 11:23:55,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:23:55,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:23:55,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:23:55,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-12 11:23:55,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:23:55,848 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:23:55,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:23:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:23:55,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:55,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:23:55,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:23:55,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:23:55,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:23:55,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:23:55,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:23:55,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:23:55,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:23:55,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:23:55,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:23:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:23:55,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:55,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:56,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:23:56,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:23:56,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:23:56,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 11:23:56,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:23:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:23:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:23:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:23:56,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:23:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:23:56,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37507438] [2020-10-12 11:23:56,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:23:56,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:23:56,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075992935] [2020-10-12 11:23:56,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:23:56,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:23:56,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:23:56,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:23:56,249 INFO L87 Difference]: Start difference. First operand 510 states and 678 transitions. Second operand 6 states. [2020-10-12 11:23:56,443 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:23:59,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:23:59,179 INFO L93 Difference]: Finished difference Result 990 states and 1472 transitions. [2020-10-12 11:23:59,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:23:59,180 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 205 [2020-10-12 11:23:59,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:23:59,187 INFO L225 Difference]: With dead ends: 990 [2020-10-12 11:23:59,188 INFO L226 Difference]: Without dead ends: 746 [2020-10-12 11:23:59,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:23:59,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-10-12 11:23:59,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 732. [2020-10-12 11:23:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-10-12 11:23:59,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1028 transitions. [2020-10-12 11:23:59,231 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1028 transitions. Word has length 205 [2020-10-12 11:23:59,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:23:59,231 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 1028 transitions. [2020-10-12 11:23:59,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:23:59,232 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1028 transitions. [2020-10-12 11:23:59,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-12 11:23:59,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:23:59,236 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:23:59,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:23:59,237 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:23:59,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:23:59,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1189283813, now seen corresponding path program 1 times [2020-10-12 11:23:59,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:23:59,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679973913] [2020-10-12 11:23:59,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:23:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:23:59,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:59,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:00,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:02,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:02,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:02,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-12 11:24:02,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:24:02,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3078 [2020-10-12 11:24:02,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:02,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:24:02,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:24:02,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:24:02,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:24:02,588 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:24:02,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:24:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:02,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:02,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:02,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:24:02,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:02,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:24:02,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:24:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:24:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:24:02,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:02,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:24:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:02,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:02,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:02,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:24:02,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:02,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 11:24:02,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:24:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:24:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:24:02,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:02,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:24:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:02,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:02,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:02,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:24:02,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:02,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 11:24:02,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:02,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:24:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:24:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:24:02,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 11:24:02,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679973913] [2020-10-12 11:24:02,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:24:02,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:24:02,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328272679] [2020-10-12 11:24:02,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:24:02,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:24:02,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:24:02,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:24:02,982 INFO L87 Difference]: Start difference. First operand 732 states and 1028 transitions. Second operand 7 states. [2020-10-12 11:24:06,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:24:06,093 INFO L93 Difference]: Finished difference Result 1685 states and 2586 transitions. [2020-10-12 11:24:06,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:24:06,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-12 11:24:06,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:24:06,103 INFO L225 Difference]: With dead ends: 1685 [2020-10-12 11:24:06,104 INFO L226 Difference]: Without dead ends: 1219 [2020-10-12 11:24:06,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:24:06,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2020-10-12 11:24:06,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1200. [2020-10-12 11:24:06,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2020-10-12 11:24:06,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1790 transitions. [2020-10-12 11:24:06,175 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1790 transitions. Word has length 214 [2020-10-12 11:24:06,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:24:06,176 INFO L479 AbstractCegarLoop]: Abstraction has 1200 states and 1790 transitions. [2020-10-12 11:24:06,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:24:06,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1790 transitions. [2020-10-12 11:24:06,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-12 11:24:06,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:24:06,182 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:24:06,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:24:06,183 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:24:06,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:24:06,186 INFO L82 PathProgramCache]: Analyzing trace with hash -629352959, now seen corresponding path program 1 times [2020-10-12 11:24:06,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:24:06,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993895530] [2020-10-12 11:24:06,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:24:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:06,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:06,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:07,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:07,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:07,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-12 11:24:07,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:24:07,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1649 [2020-10-12 11:24:07,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:24:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:24:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-12 11:24:07,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:24:08,174 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:24:08,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:24:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:08,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:08,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:08,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:24:08,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:08,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:24:08,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:24:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:24:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:24:08,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:08,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:24:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:08,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:08,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:08,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:24:08,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:08,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 11:24:08,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:24:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:24:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:24:08,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:08,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:24:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:08,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:08,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:08,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:08,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:24:08,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:24:08,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 11:24:08,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:08,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:24:08,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:24:08,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:24:08,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:24:08,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993895530] [2020-10-12 11:24:08,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:24:08,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:24:08,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811264980] [2020-10-12 11:24:08,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:24:08,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:24:08,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:24:08,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:24:08,526 INFO L87 Difference]: Start difference. First operand 1200 states and 1790 transitions. Second operand 7 states. [2020-10-12 11:24:08,868 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:24:10,034 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:24:12,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:24:12,123 INFO L93 Difference]: Finished difference Result 3098 states and 5236 transitions. [2020-10-12 11:24:12,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:24:12,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-10-12 11:24:12,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:24:12,138 INFO L225 Difference]: With dead ends: 3098 [2020-10-12 11:24:12,139 INFO L226 Difference]: Without dead ends: 2164 [2020-10-12 11:24:12,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:24:12,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2020-10-12 11:24:12,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 2093. [2020-10-12 11:24:12,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2093 states. [2020-10-12 11:24:12,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 3060 transitions. [2020-10-12 11:24:12,246 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 3060 transitions. Word has length 216 [2020-10-12 11:24:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:24:12,247 INFO L479 AbstractCegarLoop]: Abstraction has 2093 states and 3060 transitions. [2020-10-12 11:24:12,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:24:12,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 3060 transitions. [2020-10-12 11:24:12,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-12 11:24:12,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:24:12,255 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:24:12,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:24:12,256 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:24:12,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:24:12,256 INFO L82 PathProgramCache]: Analyzing trace with hash 87613770, now seen corresponding path program 1 times [2020-10-12 11:24:12,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:24:12,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003123932] [2020-10-12 11:24:12,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:24:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:12,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:12,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:12,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:12,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:14,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:16,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:17,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:17,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-12 11:24:17,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 11:24:17,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-12 11:24:17,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:17,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:24:17,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:24:17,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 11:24:17,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:24:17,631 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:24:17,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:24:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:17,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:17,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:17,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:24:17,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:17,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:24:17,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:17,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:24:17,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:24:17,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:24:17,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:17,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:24:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:17,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:17,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:17,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:24:17,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:17,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 11:24:17,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:17,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:24:17,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:24:17,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:24:17,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:17,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:24:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:17,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:17,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:17,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:17,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:24:17,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:24:17,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 11:24:17,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:24:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:24:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:24:17,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:24:17,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 11:24:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:17,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:17,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:17,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:24:17,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:17,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 11:24:17,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:24:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:24:17,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:24:17,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:24:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 11:24:18,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003123932] [2020-10-12 11:24:18,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:24:18,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:24:18,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007434985] [2020-10-12 11:24:18,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:24:18,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:24:18,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:24:18,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:24:18,011 INFO L87 Difference]: Start difference. First operand 2093 states and 3060 transitions. Second operand 8 states. [2020-10-12 11:24:18,244 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:24:18,488 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:24:19,043 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:24:23,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:24:23,607 INFO L93 Difference]: Finished difference Result 9185 states and 15420 transitions. [2020-10-12 11:24:23,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 11:24:23,607 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2020-10-12 11:24:23,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:24:23,653 INFO L225 Difference]: With dead ends: 9185 [2020-10-12 11:24:23,653 INFO L226 Difference]: Without dead ends: 7358 [2020-10-12 11:24:23,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:24:23,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7358 states. [2020-10-12 11:24:23,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7358 to 7337. [2020-10-12 11:24:23,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7337 states. [2020-10-12 11:24:23,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7337 states to 7337 states and 10906 transitions. [2020-10-12 11:24:23,897 INFO L78 Accepts]: Start accepts. Automaton has 7337 states and 10906 transitions. Word has length 226 [2020-10-12 11:24:23,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:24:23,898 INFO L479 AbstractCegarLoop]: Abstraction has 7337 states and 10906 transitions. [2020-10-12 11:24:23,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:24:23,898 INFO L276 IsEmpty]: Start isEmpty. Operand 7337 states and 10906 transitions. [2020-10-12 11:24:23,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-12 11:24:23,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:24:23,933 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:24:23,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:24:23,934 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:24:23,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:24:23,934 INFO L82 PathProgramCache]: Analyzing trace with hash -551627619, now seen corresponding path program 1 times [2020-10-12 11:24:23,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:24:23,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635102566] [2020-10-12 11:24:23,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:24:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:24,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:24,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:26,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:26,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:28,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:28,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-12 11:24:28,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:24:28,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4900 [2020-10-12 11:24:28,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:24:28,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:24:28,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 11:24:28,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:29,026 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:24:29,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:24:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:29,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:29,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:29,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:24:29,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:29,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:24:29,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:29,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:24:29,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:24:29,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:24:29,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:29,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:24:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:29,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:29,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:29,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:24:29,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:29,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 11:24:29,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:24:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:24:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:24:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:29,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:24:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:29,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:29,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:29,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:24:29,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:29,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 11:24:29,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:29,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:24:29,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:24:29,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:24:29,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 11:24:29,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635102566] [2020-10-12 11:24:29,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:24:29,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:24:29,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212968623] [2020-10-12 11:24:29,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:24:29,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:24:29,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:24:29,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:24:29,291 INFO L87 Difference]: Start difference. First operand 7337 states and 10906 transitions. Second operand 7 states. [2020-10-12 11:24:29,434 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:24:31,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:24:31,293 INFO L93 Difference]: Finished difference Result 13914 states and 21320 transitions. [2020-10-12 11:24:31,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:24:31,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-10-12 11:24:31,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:24:31,327 INFO L225 Difference]: With dead ends: 13914 [2020-10-12 11:24:31,328 INFO L226 Difference]: Without dead ends: 6843 [2020-10-12 11:24:31,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:24:31,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6843 states. [2020-10-12 11:24:31,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6843 to 6839. [2020-10-12 11:24:31,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6839 states. [2020-10-12 11:24:31,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6839 states to 6839 states and 9723 transitions. [2020-10-12 11:24:31,576 INFO L78 Accepts]: Start accepts. Automaton has 6839 states and 9723 transitions. Word has length 233 [2020-10-12 11:24:31,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:24:31,576 INFO L479 AbstractCegarLoop]: Abstraction has 6839 states and 9723 transitions. [2020-10-12 11:24:31,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:24:31,577 INFO L276 IsEmpty]: Start isEmpty. Operand 6839 states and 9723 transitions. [2020-10-12 11:24:31,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-12 11:24:31,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:24:31,615 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, 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] [2020-10-12 11:24:31,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:24:31,617 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:24:31,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:24:31,618 INFO L82 PathProgramCache]: Analyzing trace with hash -326352521, now seen corresponding path program 1 times [2020-10-12 11:24:31,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:24:31,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128895198] [2020-10-12 11:24:31,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:24:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:31,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:31,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:32,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:35,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:36,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:36,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:36,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-12 11:24:36,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:24:36,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 11:24:36,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:24:36,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:24:36,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 11:24:36,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:36,842 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:24:36,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:24:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:36,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:36,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:36,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:24:36,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:36,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:24:36,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:24:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:24:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:24:36,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:36,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:24:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:36,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:36,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:36,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:36,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:24:36,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:24:36,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 11:24:36,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:36,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:24:36,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:24:36,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:24:36,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:37,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:24:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:37,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:37,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:37,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:24:37,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:37,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 11:24:37,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:24:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:24:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:24:37,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:37,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 11:24:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:37,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:37,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:37,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 11:24:37,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:37,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:24:37,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:24:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 11:24:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:24:37,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 92 proven. 57 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:24:37,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128895198] [2020-10-12 11:24:37,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:24:37,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:24:37,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707063752] [2020-10-12 11:24:37,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:24:37,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:24:37,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:24:37,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:24:37,359 INFO L87 Difference]: Start difference. First operand 6839 states and 9723 transitions. Second operand 8 states. [2020-10-12 11:24:37,509 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:24:38,820 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:24:40,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:24:40,811 INFO L93 Difference]: Finished difference Result 16718 states and 25062 transitions. [2020-10-12 11:24:40,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:24:40,812 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 280 [2020-10-12 11:24:40,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:24:40,876 INFO L225 Difference]: With dead ends: 16718 [2020-10-12 11:24:40,876 INFO L226 Difference]: Without dead ends: 10145 [2020-10-12 11:24:40,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:24:40,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10145 states. [2020-10-12 11:24:41,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10145 to 9983. [2020-10-12 11:24:41,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9983 states. [2020-10-12 11:24:41,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9983 states to 9983 states and 14542 transitions. [2020-10-12 11:24:41,210 INFO L78 Accepts]: Start accepts. Automaton has 9983 states and 14542 transitions. Word has length 280 [2020-10-12 11:24:41,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:24:41,210 INFO L479 AbstractCegarLoop]: Abstraction has 9983 states and 14542 transitions. [2020-10-12 11:24:41,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:24:41,211 INFO L276 IsEmpty]: Start isEmpty. Operand 9983 states and 14542 transitions. [2020-10-12 11:24:41,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-12 11:24:41,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:24:41,261 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, 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] [2020-10-12 11:24:41,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:24:41,261 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:24:41,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:24:41,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1099612932, now seen corresponding path program 1 times [2020-10-12 11:24:41,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:24:41,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656764914] [2020-10-12 11:24:41,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:24:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:41,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:41,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:42,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:44,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:44,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-12 11:24:44,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:24:44,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2669 [2020-10-12 11:24:44,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:44,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:24:44,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-12 11:24:44,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-12 11:24:44,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:44,201 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:24:44,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:24:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:44,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:44,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:44,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:24:44,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:44,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:24:44,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:24:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:24:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:24:44,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:44,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:24:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:44,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:44,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:44,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:24:44,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:44,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:24:44,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:44,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:24:44,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:24:44,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:24:44,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:44,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:24:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:44,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:44,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:44,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 11:24:44,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:44,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-12 11:24:44,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:44,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:24:44,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:24:44,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 11:24:44,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 11:24:44,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656764914] [2020-10-12 11:24:44,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:24:44,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:24:44,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612326189] [2020-10-12 11:24:44,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:24:44,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:24:44,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:24:44,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:24:44,505 INFO L87 Difference]: Start difference. First operand 9983 states and 14542 transitions. Second operand 6 states. [2020-10-12 11:24:44,651 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:24:45,746 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:24:48,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:24:48,050 INFO L93 Difference]: Finished difference Result 35212 states and 53398 transitions. [2020-10-12 11:24:48,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:24:48,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 287 [2020-10-12 11:24:48,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:24:48,171 INFO L225 Difference]: With dead ends: 35212 [2020-10-12 11:24:48,171 INFO L226 Difference]: Without dead ends: 25495 [2020-10-12 11:24:48,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:24:48,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25495 states. [2020-10-12 11:24:48,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25495 to 24573. [2020-10-12 11:24:48,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24573 states. [2020-10-12 11:24:49,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24573 states to 24573 states and 37182 transitions. [2020-10-12 11:24:49,077 INFO L78 Accepts]: Start accepts. Automaton has 24573 states and 37182 transitions. Word has length 287 [2020-10-12 11:24:49,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:24:49,078 INFO L479 AbstractCegarLoop]: Abstraction has 24573 states and 37182 transitions. [2020-10-12 11:24:49,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:24:49,079 INFO L276 IsEmpty]: Start isEmpty. Operand 24573 states and 37182 transitions. [2020-10-12 11:24:49,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-12 11:24:49,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:24:49,162 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:24:49,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:24:49,163 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:24:49,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:24:49,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1553982844, now seen corresponding path program 1 times [2020-10-12 11:24:49,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:24:49,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976935541] [2020-10-12 11:24:49,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:24:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:49,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:49,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:54,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:54,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-12 11:24:54,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:24:54,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-12 11:24:54,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:24:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:24:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:24:54,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:54,482 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:24:54,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:24:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:54,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:54,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:54,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:24:54,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:54,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 11:24:54,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:24:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:24:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:24:54,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:54,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:24:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:54,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:54,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:54,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:24:54,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:54,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 11:24:54,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:54,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:24:54,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:24:54,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:24:54,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:54,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:24:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:54,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:54,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:24:54,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 11:24:54,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:24:54,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 11:24:54,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:24:54,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:24:54,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-12 11:24:54,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:24:54,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:24:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 104 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:24:54,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976935541] [2020-10-12 11:24:54,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:24:54,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:24:54,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520401712] [2020-10-12 11:24:54,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:24:54,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:24:54,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:24:54,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:24:54,886 INFO L87 Difference]: Start difference. First operand 24573 states and 37182 transitions. Second operand 7 states. [2020-10-12 11:24:55,035 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:24:56,348 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:24:58,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:24:58,168 INFO L93 Difference]: Finished difference Result 61845 states and 88868 transitions. [2020-10-12 11:24:58,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:24:58,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2020-10-12 11:24:58,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:24:58,326 INFO L225 Difference]: With dead ends: 61845 [2020-10-12 11:24:58,326 INFO L226 Difference]: Without dead ends: 37538 [2020-10-12 11:24:58,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:24:58,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37538 states. [2020-10-12 11:24:59,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37538 to 35803. [2020-10-12 11:24:59,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35803 states. [2020-10-12 11:24:59,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35803 states to 35803 states and 49827 transitions. [2020-10-12 11:24:59,175 INFO L78 Accepts]: Start accepts. Automaton has 35803 states and 49827 transitions. Word has length 294 [2020-10-12 11:24:59,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:24:59,175 INFO L479 AbstractCegarLoop]: Abstraction has 35803 states and 49827 transitions. [2020-10-12 11:24:59,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:24:59,176 INFO L276 IsEmpty]: Start isEmpty. Operand 35803 states and 49827 transitions. [2020-10-12 11:24:59,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-12 11:24:59,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:24:59,227 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:24:59,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:24:59,227 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:24:59,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:24:59,228 INFO L82 PathProgramCache]: Analyzing trace with hash 931124592, now seen corresponding path program 1 times [2020-10-12 11:24:59,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:24:59,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010620022] [2020-10-12 11:24:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:24:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:24:59,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:59,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:24:59,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:02,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:02,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:04,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:04,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-12 11:25:04,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:25:04,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-12 11:25:04,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 11:25:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:25:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 11:25:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:04,522 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:25:04,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:25:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:04,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:04,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:04,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:25:04,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:04,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:25:04,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:25:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:25:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:25:04,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:04,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:25:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:04,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:04,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:04,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:25:04,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:04,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 11:25:04,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:04,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:25:04,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:25:04,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:25:04,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:04,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:25:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:04,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:04,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:04,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 11:25:04,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:04,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 11:25:04,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:04,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:25:04,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:25:04,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 11:25:04,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:04,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 11:25:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:04,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:05,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:05,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 11:25:05,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:05,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 11:25:05,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:05,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:25:05,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:25:05,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 11:25:05,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:05,245 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 146 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 11:25:05,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010620022] [2020-10-12 11:25:05,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:25:05,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 11:25:05,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266450647] [2020-10-12 11:25:05,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 11:25:05,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:25:05,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 11:25:05,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:25:05,247 INFO L87 Difference]: Start difference. First operand 35803 states and 49827 transitions. Second operand 11 states. [2020-10-12 11:25:05,404 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:25:05,914 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2020-10-12 11:25:07,193 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 132 [2020-10-12 11:25:07,643 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 11:25:10,003 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 129 [2020-10-12 11:25:12,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:25:12,807 INFO L93 Difference]: Finished difference Result 94259 states and 143405 transitions. [2020-10-12 11:25:12,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 11:25:12,808 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 299 [2020-10-12 11:25:12,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:25:13,097 INFO L225 Difference]: With dead ends: 94259 [2020-10-12 11:25:13,097 INFO L226 Difference]: Without dead ends: 58722 [2020-10-12 11:25:13,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=205, Invalid=607, Unknown=0, NotChecked=0, Total=812 [2020-10-12 11:25:13,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58722 states. [2020-10-12 11:25:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58722 to 54164. [2020-10-12 11:25:16,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54164 states. [2020-10-12 11:25:16,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54164 states to 54164 states and 76872 transitions. [2020-10-12 11:25:16,176 INFO L78 Accepts]: Start accepts. Automaton has 54164 states and 76872 transitions. Word has length 299 [2020-10-12 11:25:16,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:25:16,177 INFO L479 AbstractCegarLoop]: Abstraction has 54164 states and 76872 transitions. [2020-10-12 11:25:16,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 11:25:16,177 INFO L276 IsEmpty]: Start isEmpty. Operand 54164 states and 76872 transitions. [2020-10-12 11:25:16,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-12 11:25:16,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:25:16,253 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:25:16,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 11:25:16,254 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:25:16,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:25:16,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1070992319, now seen corresponding path program 1 times [2020-10-12 11:25:16,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:25:16,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499442070] [2020-10-12 11:25:16,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:25:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:16,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:16,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:16,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:16,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:21,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:21,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-12 11:25:21,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:25:21,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-12 11:25:21,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:21,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:25:21,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:25:21,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 11:25:21,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:21,523 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:25:21,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:25:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:21,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:21,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:21,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:25:21,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:21,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:25:21,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:21,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:25:21,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:25:21,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:25:21,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:21,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:25:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:21,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:21,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:21,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:25:21,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:21,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:25:21,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:21,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:25:21,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:25:21,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:25:21,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:21,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:25:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:21,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:21,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:21,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:25:21,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:21,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 11:25:21,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:21,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:25:21,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:25:21,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:25:21,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:21,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 11:25:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:21,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:21,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:21,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:25:21,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:21,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 11:25:21,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:21,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:25:21,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 11:25:21,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:25:21,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:25:21,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-12 11:25:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:21,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:21,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:21,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:25:21,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:21,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:25:21,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:25:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 11:25:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:25:21,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:21,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-12 11:25:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:21,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:21,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:21,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:25:21,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:21,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 11:25:21,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:21,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:25:21,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 11:25:21,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:25:21,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:22,245 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 117 proven. 69 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-12 11:25:22,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499442070] [2020-10-12 11:25:22,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:25:22,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:25:22,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585664028] [2020-10-12 11:25:22,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:25:22,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:25:22,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:25:22,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:25:22,247 INFO L87 Difference]: Start difference. First operand 54164 states and 76872 transitions. Second operand 8 states. [2020-10-12 11:25:22,385 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:25:24,298 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:25:25,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:25:25,720 INFO L93 Difference]: Finished difference Result 144623 states and 207577 transitions. [2020-10-12 11:25:25,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:25:25,721 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 305 [2020-10-12 11:25:25,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:25:26,046 INFO L225 Difference]: With dead ends: 144623 [2020-10-12 11:25:26,047 INFO L226 Difference]: Without dead ends: 92105 [2020-10-12 11:25:26,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:25:26,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92105 states. [2020-10-12 11:25:28,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92105 to 91837. [2020-10-12 11:25:28,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91837 states. [2020-10-12 11:25:28,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91837 states to 91837 states and 128038 transitions. [2020-10-12 11:25:28,786 INFO L78 Accepts]: Start accepts. Automaton has 91837 states and 128038 transitions. Word has length 305 [2020-10-12 11:25:28,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:25:28,787 INFO L479 AbstractCegarLoop]: Abstraction has 91837 states and 128038 transitions. [2020-10-12 11:25:28,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:25:28,787 INFO L276 IsEmpty]: Start isEmpty. Operand 91837 states and 128038 transitions. [2020-10-12 11:25:28,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-12 11:25:28,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:25:28,927 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:25:28,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 11:25:28,928 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:25:28,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:25:28,928 INFO L82 PathProgramCache]: Analyzing trace with hash 320671109, now seen corresponding path program 1 times [2020-10-12 11:25:28,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:25:28,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678584120] [2020-10-12 11:25:28,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:25:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:29,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:29,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:29,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:31,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:34,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:34,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-12 11:25:34,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:25:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 11:25:34,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:25:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:25:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 11:25:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:34,240 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:25:34,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:25:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:34,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:34,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:34,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:25:34,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:34,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:25:34,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:25:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:25:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:25:34,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:34,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:25:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:34,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:34,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:25:34,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:34,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 11:25:34,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:34,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:25:34,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:25:34,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:25:34,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:34,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:25:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:34,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:34,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:34,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 11:25:34,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 11:25:34,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:25:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:25:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 11:25:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:34,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 11:25:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:34,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:34,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:34,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 11:25:34,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:34,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 11:25:34,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:34,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:25:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:25:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 11:25:34,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 187 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 11:25:34,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678584120] [2020-10-12 11:25:34,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:25:34,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:25:34,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307615850] [2020-10-12 11:25:34,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:25:34,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:25:34,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:25:34,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:25:34,720 INFO L87 Difference]: Start difference. First operand 91837 states and 128038 transitions. Second operand 8 states. [2020-10-12 11:25:35,035 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:25:35,945 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:25:40,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:25:40,770 INFO L93 Difference]: Finished difference Result 239047 states and 363846 transitions. [2020-10-12 11:25:40,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:25:40,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 317 [2020-10-12 11:25:40,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:25:41,329 INFO L225 Difference]: With dead ends: 239047 [2020-10-12 11:25:41,330 INFO L226 Difference]: Without dead ends: 147476 [2020-10-12 11:25:41,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:25:41,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147476 states. [2020-10-12 11:25:44,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147476 to 145216. [2020-10-12 11:25:44,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145216 states. [2020-10-12 11:25:45,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145216 states to 145216 states and 198896 transitions. [2020-10-12 11:25:45,171 INFO L78 Accepts]: Start accepts. Automaton has 145216 states and 198896 transitions. Word has length 317 [2020-10-12 11:25:45,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:25:45,171 INFO L479 AbstractCegarLoop]: Abstraction has 145216 states and 198896 transitions. [2020-10-12 11:25:45,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:25:45,171 INFO L276 IsEmpty]: Start isEmpty. Operand 145216 states and 198896 transitions. [2020-10-12 11:25:45,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-12 11:25:45,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:25:45,288 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:25:45,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 11:25:45,289 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:25:45,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:25:45,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1562069801, now seen corresponding path program 1 times [2020-10-12 11:25:45,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:25:45,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987250368] [2020-10-12 11:25:45,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:25:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:45,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:45,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:45,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:47,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:50,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:50,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-12 11:25:50,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:25:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5375 [2020-10-12 11:25:50,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:25:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:25:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 11:25:50,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:50,921 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:25:50,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:25:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:50,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:50,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:50,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:25:50,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:50,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:25:50,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:50,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:25:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:25:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:25:50,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:25:51,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:25:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:51,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:51,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:51,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:25:51,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:51,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-12 11:25:51,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:51,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:25:51,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:25:51,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:25:51,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:25:51,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:25:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:51,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:51,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:51,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:25:51,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:51,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 11:25:51,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:51,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:25:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:25:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:25:51,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:25:51,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 11:25:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:25:51,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:25:51,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:25:51,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:25:51,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:25:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 11:25:51,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:25:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:25:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 11:25:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:25:51,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:25:52,020 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 127 proven. 23 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 11:25:52,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987250368] [2020-10-12 11:25:52,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:25:52,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:25:52,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095827016] [2020-10-12 11:25:52,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:25:52,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:25:52,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:25:52,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:25:52,023 INFO L87 Difference]: Start difference. First operand 145216 states and 198896 transitions. Second operand 7 states. [2020-10-12 11:25:52,218 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:25:53,471 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:25:56,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:25:56,473 INFO L93 Difference]: Finished difference Result 277297 states and 380609 transitions. [2020-10-12 11:25:56,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:25:56,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 317 [2020-10-12 11:25:56,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:25:56,928 INFO L225 Difference]: With dead ends: 277297 [2020-10-12 11:25:56,928 INFO L226 Difference]: Without dead ends: 167013 [2020-10-12 11:25:57,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:25:57,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167013 states. [2020-10-12 11:25:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167013 to 166791. [2020-10-12 11:25:59,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166791 states. [2020-10-12 11:25:59,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166791 states to 166791 states and 222260 transitions. [2020-10-12 11:25:59,934 INFO L78 Accepts]: Start accepts. Automaton has 166791 states and 222260 transitions. Word has length 317 [2020-10-12 11:25:59,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:25:59,935 INFO L479 AbstractCegarLoop]: Abstraction has 166791 states and 222260 transitions. [2020-10-12 11:25:59,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:25:59,935 INFO L276 IsEmpty]: Start isEmpty. Operand 166791 states and 222260 transitions. [2020-10-12 11:26:00,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-12 11:26:00,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:26:00,075 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:26:00,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 11:26:00,075 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:26:00,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:26:00,076 INFO L82 PathProgramCache]: Analyzing trace with hash -400316018, now seen corresponding path program 1 times [2020-10-12 11:26:00,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:26:00,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391490867] [2020-10-12 11:26:00,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:26:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:00,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:01,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:01,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:01,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:05,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:26:05,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-12 11:26:05,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:26:05,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 11:26:05,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:26:05,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:26:05,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:26:05,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-12 11:26:05,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:26:05,324 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:26:05,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:26:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:05,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:05,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:26:05,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:26:05,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:26:05,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:26:05,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:26:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:26:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:26:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:26:05,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:26:05,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:26:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:05,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:05,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:26:05,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:26:05,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:26:05,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:26:05,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:26:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:26:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:26:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:26:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:26:05,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:26:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:05,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:26:05,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 11:26:05,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:26:05,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-12 11:26:05,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:26:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:26:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:26:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-12 11:26:05,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:26:05,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-12 11:26:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:05,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:05,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:26:05,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:26:05,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:26:05,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:26:05,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:26:05,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:26:05,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:26:05,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:26:05,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:26:05,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-12 11:26:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:05,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:05,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:26:05,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:26:05,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:26:05,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:26:05,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:26:05,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:26:05,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 11:26:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:26:05,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:26:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 165 proven. 31 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-12 11:26:05,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391490867] [2020-10-12 11:26:05,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:26:05,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:26:05,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645760977] [2020-10-12 11:26:05,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:26:05,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:26:05,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:26:05,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:26:05,859 INFO L87 Difference]: Start difference. First operand 166791 states and 222260 transitions. Second operand 7 states. [2020-10-12 11:26:05,991 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:26:07,295 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:26:10,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:26:10,791 INFO L93 Difference]: Finished difference Result 378851 states and 506447 transitions. [2020-10-12 11:26:10,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:26:10,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 355 [2020-10-12 11:26:10,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:26:11,387 INFO L225 Difference]: With dead ends: 378851 [2020-10-12 11:26:11,387 INFO L226 Difference]: Without dead ends: 223426 [2020-10-12 11:26:11,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:26:11,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223426 states. [2020-10-12 11:26:15,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223426 to 223300. [2020-10-12 11:26:15,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223300 states. [2020-10-12 11:26:15,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223300 states to 223300 states and 288993 transitions. [2020-10-12 11:26:15,623 INFO L78 Accepts]: Start accepts. Automaton has 223300 states and 288993 transitions. Word has length 355 [2020-10-12 11:26:15,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:26:15,624 INFO L479 AbstractCegarLoop]: Abstraction has 223300 states and 288993 transitions. [2020-10-12 11:26:15,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:26:15,624 INFO L276 IsEmpty]: Start isEmpty. Operand 223300 states and 288993 transitions. [2020-10-12 11:26:15,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-12 11:26:15,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:26:15,871 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:26:15,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 11:26:15,872 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:26:15,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:26:15,872 INFO L82 PathProgramCache]: Analyzing trace with hash -253334496, now seen corresponding path program 1 times [2020-10-12 11:26:15,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:26:15,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736003281] [2020-10-12 11:26:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:26:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:20,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:20,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:20,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:20,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:22,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:25,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:26:25,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-12 11:26:25,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:26:25,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 11:26:25,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:26:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:26:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-12 11:26:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:26:25,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:26:25,699 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:26:25,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:26:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:25,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:25,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:26:25,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:26:25,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:26:25,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:26:25,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:26:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:26:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:26:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:26:25,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:26:25,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:26:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:25,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:25,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:26:25,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:26:25,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:26:25,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:26:25,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:26:25,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:26:25,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:26:25,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:26:25,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:26:25,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:26:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:25,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:25,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:26:25,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 11:26:25,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:26:25,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 11:26:25,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:26:25,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:26:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:26:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:26:25,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:26:25,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 11:26:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:26,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:26,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:26:26,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:26:26,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:26:26,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-12 11:26:26,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:26:26,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:26:26,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:26:26,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 11:26:26,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:26:26,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-12 11:26:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:26,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:26,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:26,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:26:26,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:26:26,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:26:26,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 11:26:26,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:26:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:26:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:26:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:26:26,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:26:26,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-12 11:26:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:26,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:26,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:26:26,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:26:26,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:26:26,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 11:26:26,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:26:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:26:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:26:26,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 11:26:26,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:26:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 251 proven. 4 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-12 11:26:26,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736003281] [2020-10-12 11:26:26,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:26:26,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:26:26,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211231655] [2020-10-12 11:26:26,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:26:26,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:26:26,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:26:26,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:26:26,552 INFO L87 Difference]: Start difference. First operand 223300 states and 288993 transitions. Second operand 7 states. [2020-10-12 11:26:26,682 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:26:27,793 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129