/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:15:00,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:15:00,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:15:00,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:15:00,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:15:00,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:15:00,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:15:00,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:15:00,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:15:00,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:15:00,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:15:00,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:15:00,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:15:00,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:15:00,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:15:00,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:15:00,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:15:00,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:15:00,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:15:00,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:15:00,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:15:00,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:15:00,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:15:00,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:15:00,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:15:00,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:15:00,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:15:00,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:15:00,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:15:00,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:15:00,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:15:00,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:15:00,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:15:00,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:15:00,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:15:00,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:15:00,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:15:00,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:15:00,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:15:00,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:15:00,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:15:00,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 06:15:00,320 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:15:00,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:15:00,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:15:00,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:15:00,326 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:15:00,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:15:00,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:15:00,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:15:00,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:15:00,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:15:00,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:15:00,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:15:00,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:15:00,328 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:15:00,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:15:00,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:15:00,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:15:00,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:15:00,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:15:00,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:15:00,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:15:00,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:15:00,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:15:00,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:15:00,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:15:00,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:15:00,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:15:00,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:15:00,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:15:00,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:15:00,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:15:00,682 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:15:00,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:15:00,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:15:00,688 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:15:00,688 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label08.c [2020-10-13 06:15:00,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c35785ed0/2b944eb631d24011918316d5ffb3619d/FLAG9c9ed2786 [2020-10-13 06:15:01,399 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:15:01,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label08.c [2020-10-13 06:15:01,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c35785ed0/2b944eb631d24011918316d5ffb3619d/FLAG9c9ed2786 [2020-10-13 06:15:01,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c35785ed0/2b944eb631d24011918316d5ffb3619d [2020-10-13 06:15:01,582 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:15:01,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:15:01,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:15:01,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:15:01,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:15:01,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:15:01" (1/1) ... [2020-10-13 06:15:01,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2caf49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:01, skipping insertion in model container [2020-10-13 06:15:01,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:15:01" (1/1) ... [2020-10-13 06:15:01,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:15:01,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:15:02,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:15:02,548 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:15:02,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:15:02,967 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:15:02,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:02 WrapperNode [2020-10-13 06:15:02,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:15:02,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:15:02,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:15:02,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:15:02,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:02" (1/1) ... [2020-10-13 06:15:02,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:02" (1/1) ... [2020-10-13 06:15:03,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:02" (1/1) ... [2020-10-13 06:15:03,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:02" (1/1) ... [2020-10-13 06:15:03,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:02" (1/1) ... [2020-10-13 06:15:03,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:02" (1/1) ... [2020-10-13 06:15:03,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:02" (1/1) ... [2020-10-13 06:15:03,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:15:03,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:15:03,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:15:03,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:15:03,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:15:03,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:15:03,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:15:03,217 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:15:03,217 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:15:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:15:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:15:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:15:03,219 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:15:03,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:15:03,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:15:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:15:05,147 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:15:05,147 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:15:05,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:15:05 BoogieIcfgContainer [2020-10-13 06:15:05,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:15:05,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:15:05,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:15:05,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:15:05,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:15:01" (1/3) ... [2020-10-13 06:15:05,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725d401a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:15:05, skipping insertion in model container [2020-10-13 06:15:05,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:15:02" (2/3) ... [2020-10-13 06:15:05,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725d401a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:15:05, skipping insertion in model container [2020-10-13 06:15:05,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:15:05" (3/3) ... [2020-10-13 06:15:05,163 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label08.c [2020-10-13 06:15:05,173 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:15:05,181 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:15:05,195 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:15:05,222 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:15:05,222 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:15:05,222 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:15:05,223 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:15:05,223 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:15:05,223 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:15:05,223 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:15:05,223 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:15:05,248 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:15:05,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-13 06:15:05,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:05,266 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] [2020-10-13 06:15:05,266 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:05,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:05,273 INFO L82 PathProgramCache]: Analyzing trace with hash -116190352, now seen corresponding path program 1 times [2020-10-13 06:15:05,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:05,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040789318] [2020-10-13 06:15:05,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:05,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:06,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:10,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:10,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 06:15:10,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:15:10,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4329 [2020-10-13 06:15:10,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:10,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:15:10,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:15:10,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:15:10,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 06:15:11,083 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-13 06:15:11,533 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 57 [2020-10-13 06:15:12,053 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 82 [2020-10-13 06:15:12,174 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:15:12,429 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2020-10-13 06:15:12,664 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-10-13 06:15:12,856 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-10-13 06:15:13,009 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-10-13 06:15:13,178 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2020-10-13 06:15:13,495 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:13,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:13,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:13,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:13,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:13,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:13,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:15:13,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:13,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:13,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:13,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:15:13,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:15:14,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040789318] [2020-10-13 06:15:14,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:15:14,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 06:15:14,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797371552] [2020-10-13 06:15:14,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:15:14,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:14,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:15:14,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:15:14,350 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 13 states. [2020-10-13 06:15:14,915 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 06:15:16,055 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 227 DAG size of output: 190 [2020-10-13 06:15:17,164 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 236 DAG size of output: 194 [2020-10-13 06:15:18,566 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 256 DAG size of output: 214 [2020-10-13 06:15:19,929 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 257 DAG size of output: 211 [2020-10-13 06:15:21,563 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 257 DAG size of output: 208 [2020-10-13 06:15:23,722 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 257 DAG size of output: 205 [2020-10-13 06:15:27,501 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 258 DAG size of output: 202 [2020-10-13 06:15:29,343 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 258 DAG size of output: 197 [2020-10-13 06:15:31,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:31,993 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:15:31,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:15:32,000 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 163 [2020-10-13 06:15:32,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:32,018 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:15:32,018 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:15:32,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-10-13 06:15:32,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:15:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:15:32,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:15:32,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:15:32,100 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 163 [2020-10-13 06:15:32,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:32,101 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:15:32,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:15:32,102 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:15:32,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 06:15:32,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:32,108 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] [2020-10-13 06:15:32,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:15:32,109 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:32,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:32,109 INFO L82 PathProgramCache]: Analyzing trace with hash -926763881, now seen corresponding path program 1 times [2020-10-13 06:15:32,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:32,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274078524] [2020-10-13 06:15:32,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:32,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:32,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:34,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:35,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:35,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 06:15:35,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:15:35,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3789 [2020-10-13 06:15:35,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:15:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-13 06:15:35,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:36,250 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:36,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:36,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:36,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:36,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:36,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:36,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:15:36,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:36,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:36,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:36,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:36,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:36,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:36,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:36,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:36,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:15:36,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:36,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:15:36,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:36,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:36,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:36,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:15:36,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:15:36,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274078524] [2020-10-13 06:15:36,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:36,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:15:36,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359773021] [2020-10-13 06:15:36,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:15:36,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:36,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:15:36,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:15:36,455 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 5 states. [2020-10-13 06:15:36,624 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:15:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:39,219 INFO L93 Difference]: Finished difference Result 818 states and 1276 transitions. [2020-10-13 06:15:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:15:39,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-13 06:15:39,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:39,228 INFO L225 Difference]: With dead ends: 818 [2020-10-13 06:15:39,228 INFO L226 Difference]: Without dead ends: 575 [2020-10-13 06:15:39,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:15:39,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-10-13 06:15:39,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2020-10-13 06:15:39,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-10-13 06:15:39,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 774 transitions. [2020-10-13 06:15:39,276 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 774 transitions. Word has length 174 [2020-10-13 06:15:39,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:39,277 INFO L479 AbstractCegarLoop]: Abstraction has 575 states and 774 transitions. [2020-10-13 06:15:39,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:15:39,278 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 774 transitions. [2020-10-13 06:15:39,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-13 06:15:39,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:39,283 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] [2020-10-13 06:15:39,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:15:39,283 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:39,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:39,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1143772981, now seen corresponding path program 1 times [2020-10-13 06:15:39,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:39,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377652738] [2020-10-13 06:15:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:39,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:40,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:40,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 06:15:40,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:40,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-13 06:15:40,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:15:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-13 06:15:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:40,322 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:40,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:40,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:40,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:40,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:40,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:40,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:15:40,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:40,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:40,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:40,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:40,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:40,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:40,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:15:40,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:40,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 06:15:40,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:15:40,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:40,591 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:15:40,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377652738] [2020-10-13 06:15:40,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:40,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:15:40,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232119875] [2020-10-13 06:15:40,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:15:40,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:40,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:15:40,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:15:40,597 INFO L87 Difference]: Start difference. First operand 575 states and 774 transitions. Second operand 5 states. [2020-10-13 06:15:41,016 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:15:43,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:43,758 INFO L93 Difference]: Finished difference Result 1471 states and 2065 transitions. [2020-10-13 06:15:43,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:15:43,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-13 06:15:43,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:43,769 INFO L225 Difference]: With dead ends: 1471 [2020-10-13 06:15:43,770 INFO L226 Difference]: Without dead ends: 1017 [2020-10-13 06:15:43,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:15:43,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2020-10-13 06:15:43,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1003. [2020-10-13 06:15:43,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-13 06:15:43,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1353 transitions. [2020-10-13 06:15:43,825 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1353 transitions. Word has length 184 [2020-10-13 06:15:43,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:43,826 INFO L479 AbstractCegarLoop]: Abstraction has 1003 states and 1353 transitions. [2020-10-13 06:15:43,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:15:43,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1353 transitions. [2020-10-13 06:15:43,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-13 06:15:43,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:43,831 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:15:43,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:15:43,832 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:43,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:43,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1678715707, now seen corresponding path program 1 times [2020-10-13 06:15:43,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:43,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131287322] [2020-10-13 06:15:43,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:43,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:44,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:45,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:45,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:45,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-13 06:15:45,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:15:45,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1823 [2020-10-13 06:15:45,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:15:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 06:15:45,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:45,997 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:45,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:46,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:46,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:46,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:46,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:46,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:15:46,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:46,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:46,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:46,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:46,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:46,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:15:46,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:46,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 06:15:46,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:15:46,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:46,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:15:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:46,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:46,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:46,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:15:46,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:46,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:15:46,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:46,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:46,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:15:46,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:15:46,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:15:46,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131287322] [2020-10-13 06:15:46,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:46,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:15:46,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150113337] [2020-10-13 06:15:46,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:15:46,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:46,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:15:46,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:15:46,399 INFO L87 Difference]: Start difference. First operand 1003 states and 1353 transitions. Second operand 8 states. [2020-10-13 06:15:46,550 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:15:46,843 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:15:47,356 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:15:50,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:50,607 INFO L93 Difference]: Finished difference Result 2339 states and 3342 transitions. [2020-10-13 06:15:50,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:15:50,607 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 194 [2020-10-13 06:15:50,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:50,617 INFO L225 Difference]: With dead ends: 2339 [2020-10-13 06:15:50,617 INFO L226 Difference]: Without dead ends: 1457 [2020-10-13 06:15:50,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:15:50,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2020-10-13 06:15:50,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1443. [2020-10-13 06:15:50,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2020-10-13 06:15:50,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1903 transitions. [2020-10-13 06:15:50,671 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1903 transitions. Word has length 194 [2020-10-13 06:15:50,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:50,671 INFO L479 AbstractCegarLoop]: Abstraction has 1443 states and 1903 transitions. [2020-10-13 06:15:50,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:15:50,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1903 transitions. [2020-10-13 06:15:50,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-13 06:15:50,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:50,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:15:50,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:15:50,678 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:50,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:50,678 INFO L82 PathProgramCache]: Analyzing trace with hash 518791560, now seen corresponding path program 1 times [2020-10-13 06:15:50,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:50,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079694578] [2020-10-13 06:15:50,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:50,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:50,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:52,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:54,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:54,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-13 06:15:54,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:15:54,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3461 [2020-10-13 06:15:54,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:54,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:54,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:15:54,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:15:54,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:54,380 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:54,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:54,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:54,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:54,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:54,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:54,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:15:54,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:54,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:54,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:54,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:54,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:54,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:54,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:15:54,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:54,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 06:15:54,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:54,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:54,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:54,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:15:54,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 06:15:54,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:15:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:54,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:54,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:54,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:15:54,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:54,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 06:15:54,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:54,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:54,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:15:54,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:15:54,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:15:54,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079694578] [2020-10-13 06:15:54,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:54,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:15:54,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214245840] [2020-10-13 06:15:54,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:15:54,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:54,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:15:54,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:15:54,913 INFO L87 Difference]: Start difference. First operand 1443 states and 1903 transitions. Second operand 7 states. [2020-10-13 06:15:55,140 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:15:56,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:56,790 INFO L93 Difference]: Finished difference Result 2742 states and 3670 transitions. [2020-10-13 06:15:56,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:15:56,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-10-13 06:15:56,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:56,803 INFO L225 Difference]: With dead ends: 2742 [2020-10-13 06:15:56,803 INFO L226 Difference]: Without dead ends: 1420 [2020-10-13 06:15:56,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:15:56,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2020-10-13 06:15:56,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1420. [2020-10-13 06:15:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1420 states. [2020-10-13 06:15:56,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1806 transitions. [2020-10-13 06:15:56,863 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1806 transitions. Word has length 201 [2020-10-13 06:15:56,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:56,864 INFO L479 AbstractCegarLoop]: Abstraction has 1420 states and 1806 transitions. [2020-10-13 06:15:56,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:15:56,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1806 transitions. [2020-10-13 06:15:56,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-13 06:15:56,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:56,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:15:56,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:15:56,870 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:56,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:56,871 INFO L82 PathProgramCache]: Analyzing trace with hash -117913030, now seen corresponding path program 1 times [2020-10-13 06:15:56,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:56,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628066851] [2020-10-13 06:15:56,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:57,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:58,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:58,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-13 06:15:58,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:15:58,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1731 [2020-10-13 06:15:58,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:15:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 06:15:58,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:58,848 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:58,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:58,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:58,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:58,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:58,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:58,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:15:58,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:58,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:58,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:58,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:58,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:58,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:58,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:58,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:15:58,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:58,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 06:15:58,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:15:58,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:59,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:15:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:59,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:59,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:59,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:15:59,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:59,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 06:15:59,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:15:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:15:59,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:59,266 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:15:59,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628066851] [2020-10-13 06:15:59,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:59,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:15:59,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931570543] [2020-10-13 06:15:59,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:15:59,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:59,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:15:59,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:15:59,269 INFO L87 Difference]: Start difference. First operand 1420 states and 1806 transitions. Second operand 7 states. [2020-10-13 06:15:59,611 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:01,321 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:16:03,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:03,230 INFO L93 Difference]: Finished difference Result 4133 states and 5900 transitions. [2020-10-13 06:16:03,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:16:03,231 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-10-13 06:16:03,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:03,259 INFO L225 Difference]: With dead ends: 4133 [2020-10-13 06:16:03,259 INFO L226 Difference]: Without dead ends: 2834 [2020-10-13 06:16:03,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:16:03,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2020-10-13 06:16:03,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 2731. [2020-10-13 06:16:03,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2731 states. [2020-10-13 06:16:03,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2731 states to 2731 states and 3482 transitions. [2020-10-13 06:16:03,393 INFO L78 Accepts]: Start accepts. Automaton has 2731 states and 3482 transitions. Word has length 222 [2020-10-13 06:16:03,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:03,394 INFO L479 AbstractCegarLoop]: Abstraction has 2731 states and 3482 transitions. [2020-10-13 06:16:03,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:03,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2731 states and 3482 transitions. [2020-10-13 06:16:03,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-13 06:16:03,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:03,404 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:16:03,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:16:03,405 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:03,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:03,406 INFO L82 PathProgramCache]: Analyzing trace with hash 75131573, now seen corresponding path program 1 times [2020-10-13 06:16:03,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:03,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950511826] [2020-10-13 06:16:03,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:03,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:03,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:04,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:07,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:07,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:07,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:07,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 06:16:07,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:16:07,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4493 [2020-10-13 06:16:07,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:07,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:07,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:16:07,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:16:07,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:08,161 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:08,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:08,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:08,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:08,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:08,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:08,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:16:08,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:08,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:08,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:08,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:08,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:08,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:08,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:08,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:08,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:16:08,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:08,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:16:08,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:08,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:08,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:08,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:16:08,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:08,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:16:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:08,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:08,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:08,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:16:08,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:08,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-13 06:16:08,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:08,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:08,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:08,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:16:08,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:16:08,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950511826] [2020-10-13 06:16:08,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:08,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:08,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136379094] [2020-10-13 06:16:08,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:08,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:08,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:08,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:08,719 INFO L87 Difference]: Start difference. First operand 2731 states and 3482 transitions. Second operand 7 states. [2020-10-13 06:16:08,885 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:09,920 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:11,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:11,923 INFO L93 Difference]: Finished difference Result 7938 states and 10553 transitions. [2020-10-13 06:16:11,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:16:11,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-13 06:16:11,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:11,957 INFO L225 Difference]: With dead ends: 7938 [2020-10-13 06:16:11,957 INFO L226 Difference]: Without dead ends: 5328 [2020-10-13 06:16:11,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:16:11,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2020-10-13 06:16:12,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 5290. [2020-10-13 06:16:12,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5290 states. [2020-10-13 06:16:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 6689 transitions. [2020-10-13 06:16:12,111 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 6689 transitions. Word has length 232 [2020-10-13 06:16:12,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:12,111 INFO L479 AbstractCegarLoop]: Abstraction has 5290 states and 6689 transitions. [2020-10-13 06:16:12,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:12,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 6689 transitions. [2020-10-13 06:16:12,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-13 06:16:12,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:12,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:16:12,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:16:12,126 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:12,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:12,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1050661246, now seen corresponding path program 1 times [2020-10-13 06:16:12,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:12,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186411140] [2020-10-13 06:16:12,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:12,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:12,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:13,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:13,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:15,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:17,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:17,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-13 06:16:17,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:16:17,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 06:16:17,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:17,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:16:17,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:16:17,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:16:17,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:17,374 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:17,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:17,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:17,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:17,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:17,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:17,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:16:17,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:16:17,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:17,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:17,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:17,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:17,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:16:17,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:17,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 06:16:17,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:17,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:17,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:17,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:16:17,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:17,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:16:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:17,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:17,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:17,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:16:17,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:17,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 06:16:17,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:17,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:17,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:16:17,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:17,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:16:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 64 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 06:16:17,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186411140] [2020-10-13 06:16:17,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:17,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:17,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068923175] [2020-10-13 06:16:17,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:17,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:17,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:17,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:17,903 INFO L87 Difference]: Start difference. First operand 5290 states and 6689 transitions. Second operand 7 states. [2020-10-13 06:16:18,123 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:16:19,151 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:16:21,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:21,313 INFO L93 Difference]: Finished difference Result 15250 states and 20319 transitions. [2020-10-13 06:16:21,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 06:16:21,314 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-10-13 06:16:21,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:21,361 INFO L225 Difference]: With dead ends: 15250 [2020-10-13 06:16:21,361 INFO L226 Difference]: Without dead ends: 10081 [2020-10-13 06:16:21,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:16:21,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10081 states. [2020-10-13 06:16:21,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10081 to 9971. [2020-10-13 06:16:21,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9971 states. [2020-10-13 06:16:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9971 states to 9971 states and 12573 transitions. [2020-10-13 06:16:21,680 INFO L78 Accepts]: Start accepts. Automaton has 9971 states and 12573 transitions. Word has length 233 [2020-10-13 06:16:21,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:21,681 INFO L479 AbstractCegarLoop]: Abstraction has 9971 states and 12573 transitions. [2020-10-13 06:16:21,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:21,681 INFO L276 IsEmpty]: Start isEmpty. Operand 9971 states and 12573 transitions. [2020-10-13 06:16:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-13 06:16:21,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:21,702 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:16:21,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:16:21,702 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:21,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:21,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1013954025, now seen corresponding path program 1 times [2020-10-13 06:16:21,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:21,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672887312] [2020-10-13 06:16:21,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:21,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:22,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:22,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:24,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:24,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-13 06:16:24,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:16:24,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2261 [2020-10-13 06:16:24,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:16:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:16:24,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:16:24,286 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:24,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:24,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:24,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:24,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:24,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:24,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:16:24,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:24,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:24,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:16:24,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:24,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:24,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:24,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:16:24,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:24,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:16:24,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:24,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:16:24,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:24,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:16:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:24,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:24,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:24,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:16:24,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:24,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-13 06:16:24,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:24,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:16:24,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:16:24,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672887312] [2020-10-13 06:16:24,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:24,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:24,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254254321] [2020-10-13 06:16:24,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:24,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:24,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:24,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:24,752 INFO L87 Difference]: Start difference. First operand 9971 states and 12573 transitions. Second operand 7 states. [2020-10-13 06:16:25,125 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:16:26,126 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:16:28,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:28,691 INFO L93 Difference]: Finished difference Result 22642 states and 30908 transitions. [2020-10-13 06:16:28,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:16:28,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-13 06:16:28,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:28,767 INFO L225 Difference]: With dead ends: 22642 [2020-10-13 06:16:28,767 INFO L226 Difference]: Without dead ends: 12792 [2020-10-13 06:16:28,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:16:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12792 states. [2020-10-13 06:16:29,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12792 to 11908. [2020-10-13 06:16:29,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11908 states. [2020-10-13 06:16:29,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11908 states to 11908 states and 15143 transitions. [2020-10-13 06:16:29,195 INFO L78 Accepts]: Start accepts. Automaton has 11908 states and 15143 transitions. Word has length 242 [2020-10-13 06:16:29,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:29,196 INFO L479 AbstractCegarLoop]: Abstraction has 11908 states and 15143 transitions. [2020-10-13 06:16:29,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:29,196 INFO L276 IsEmpty]: Start isEmpty. Operand 11908 states and 15143 transitions. [2020-10-13 06:16:29,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-13 06:16:29,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:29,221 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:16:29,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:16:29,221 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:29,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:29,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1183541381, now seen corresponding path program 1 times [2020-10-13 06:16:29,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:29,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077626479] [2020-10-13 06:16:29,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:29,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:29,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:30,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:32,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:32,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-13 06:16:32,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:16:32,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2892 [2020-10-13 06:16:32,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:32,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:32,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:16:32,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:16:32,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:16:32,456 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:32,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:32,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:32,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:32,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:32,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:32,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:16:32,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:32,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:32,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:32,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:32,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:32,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:32,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:32,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:32,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:16:32,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:32,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 06:16:32,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:32,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:32,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:32,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:16:32,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:32,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:16:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:32,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:32,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:32,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:16:32,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:32,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 06:16:32,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:32,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:32,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:32,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:16:32,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:16:33,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077626479] [2020-10-13 06:16:33,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:33,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:33,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293985536] [2020-10-13 06:16:33,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:33,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:33,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:33,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:33,117 INFO L87 Difference]: Start difference. First operand 11908 states and 15143 transitions. Second operand 7 states. [2020-10-13 06:16:33,616 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:16:35,167 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:16:37,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:37,073 INFO L93 Difference]: Finished difference Result 28122 states and 37479 transitions. [2020-10-13 06:16:37,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:16:37,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-13 06:16:37,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:37,140 INFO L225 Difference]: With dead ends: 28122 [2020-10-13 06:16:37,140 INFO L226 Difference]: Without dead ends: 16335 [2020-10-13 06:16:37,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:16:37,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16335 states. [2020-10-13 06:16:37,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16335 to 16149. [2020-10-13 06:16:37,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16149 states. [2020-10-13 06:16:37,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16149 states to 16149 states and 20420 transitions. [2020-10-13 06:16:37,658 INFO L78 Accepts]: Start accepts. Automaton has 16149 states and 20420 transitions. Word has length 256 [2020-10-13 06:16:37,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:37,658 INFO L479 AbstractCegarLoop]: Abstraction has 16149 states and 20420 transitions. [2020-10-13 06:16:37,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:37,659 INFO L276 IsEmpty]: Start isEmpty. Operand 16149 states and 20420 transitions. [2020-10-13 06:16:37,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-13 06:16:37,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:37,695 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:16:37,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:16:37,695 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:37,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:37,695 INFO L82 PathProgramCache]: Analyzing trace with hash -285173854, now seen corresponding path program 1 times [2020-10-13 06:16:37,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:37,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786533675] [2020-10-13 06:16:37,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:37,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:38,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:40,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:40,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 06:16:40,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:16:40,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2679 [2020-10-13 06:16:40,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:40,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:40,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:16:40,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-13 06:16:40,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:40,759 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:40,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:40,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:40,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:40,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:40,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:40,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:16:40,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:40,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:40,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:40,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:40,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:40,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:40,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:41,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:41,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:16:41,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:41,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 06:16:41,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:16:41,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:16:41,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786533675] [2020-10-13 06:16:41,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:41,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:16:41,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382033547] [2020-10-13 06:16:41,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:16:41,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:41,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:16:41,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:16:41,085 INFO L87 Difference]: Start difference. First operand 16149 states and 20420 transitions. Second operand 5 states. [2020-10-13 06:16:41,659 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:16:43,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:43,672 INFO L93 Difference]: Finished difference Result 31767 states and 40163 transitions. [2020-10-13 06:16:43,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:16:43,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 263 [2020-10-13 06:16:43,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:43,720 INFO L225 Difference]: With dead ends: 31767 [2020-10-13 06:16:43,720 INFO L226 Difference]: Without dead ends: 15739 [2020-10-13 06:16:43,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:16:43,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15739 states. [2020-10-13 06:16:44,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15739 to 15725. [2020-10-13 06:16:44,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15725 states. [2020-10-13 06:16:44,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15725 states to 15725 states and 19562 transitions. [2020-10-13 06:16:44,194 INFO L78 Accepts]: Start accepts. Automaton has 15725 states and 19562 transitions. Word has length 263 [2020-10-13 06:16:44,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:44,195 INFO L479 AbstractCegarLoop]: Abstraction has 15725 states and 19562 transitions. [2020-10-13 06:16:44,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:16:44,195 INFO L276 IsEmpty]: Start isEmpty. Operand 15725 states and 19562 transitions. [2020-10-13 06:16:44,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-13 06:16:44,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:44,235 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:16:44,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:16:44,236 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:44,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:44,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2039011276, now seen corresponding path program 1 times [2020-10-13 06:16:44,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:44,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296639648] [2020-10-13 06:16:44,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:44,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:45,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:47,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:49,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:49,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-13 06:16:49,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:16:49,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 06:16:49,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:49,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:16:49,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:16:49,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:49,510 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:49,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:49,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:49,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:49,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:49,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:49,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:16:49,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:49,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:49,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:49,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:49,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:49,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:49,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:49,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:49,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:16:49,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:49,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 06:16:49,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:49,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:49,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:49,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:16:49,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:49,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:16:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:49,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:49,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:49,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:16:49,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:49,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 06:16:49,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:49,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:49,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:49,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:16:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:49,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 06:16:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:49,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:49,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:49,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:16:49,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:49,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 06:16:49,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 06:16:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:49,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:50,000 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 124 proven. 31 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 06:16:50,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296639648] [2020-10-13 06:16:50,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:50,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:50,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356526598] [2020-10-13 06:16:50,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:50,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:50,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:50,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:50,002 INFO L87 Difference]: Start difference. First operand 15725 states and 19562 transitions. Second operand 7 states. [2020-10-13 06:16:50,257 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:16:50,519 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:54,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:54,057 INFO L93 Difference]: Finished difference Result 33216 states and 43071 transitions. [2020-10-13 06:16:54,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:16:54,058 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-10-13 06:16:54,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:54,125 INFO L225 Difference]: With dead ends: 33216 [2020-10-13 06:16:54,125 INFO L226 Difference]: Without dead ends: 17612 [2020-10-13 06:16:54,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:16:54,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17612 states. [2020-10-13 06:16:54,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17612 to 17285. [2020-10-13 06:16:54,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17285 states. [2020-10-13 06:16:54,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17285 states to 17285 states and 20636 transitions. [2020-10-13 06:16:54,594 INFO L78 Accepts]: Start accepts. Automaton has 17285 states and 20636 transitions. Word has length 274 [2020-10-13 06:16:54,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:54,595 INFO L479 AbstractCegarLoop]: Abstraction has 17285 states and 20636 transitions. [2020-10-13 06:16:54,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:54,595 INFO L276 IsEmpty]: Start isEmpty. Operand 17285 states and 20636 transitions. [2020-10-13 06:16:54,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-13 06:16:54,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:54,636 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:16:54,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:16:54,637 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:54,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:54,637 INFO L82 PathProgramCache]: Analyzing trace with hash 751975957, now seen corresponding path program 1 times [2020-10-13 06:16:54,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:54,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325554791] [2020-10-13 06:16:54,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:54,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:55,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:55,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:57,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:57,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-13 06:16:57,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:16:57,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2885 [2020-10-13 06:16:57,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:57,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:57,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:16:57,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 06:16:57,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:57,802 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:57,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:57,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:57,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:57,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:57,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:57,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:16:57,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:57,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:57,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:57,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:57,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:57,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:16:57,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:57,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 06:16:57,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:57,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:57,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:57,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:16:57,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:57,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:16:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:57,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:58,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:58,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 06:16:58,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:58,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 06:16:58,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 06:16:58,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:16:58,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325554791] [2020-10-13 06:16:58,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:58,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:58,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72505463] [2020-10-13 06:16:58,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:58,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:58,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:58,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:58,258 INFO L87 Difference]: Start difference. First operand 17285 states and 20636 transitions. Second operand 7 states. [2020-10-13 06:16:58,551 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:16:58,806 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:17:02,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:02,274 INFO L93 Difference]: Finished difference Result 35958 states and 42964 transitions. [2020-10-13 06:17:02,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:17:02,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-13 06:17:02,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:02,338 INFO L225 Difference]: With dead ends: 35958 [2020-10-13 06:17:02,338 INFO L226 Difference]: Without dead ends: 19675 [2020-10-13 06:17:02,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:17:02,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19675 states. [2020-10-13 06:17:02,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19675 to 19615. [2020-10-13 06:17:02,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19615 states. [2020-10-13 06:17:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19615 states to 19615 states and 23297 transitions. [2020-10-13 06:17:02,733 INFO L78 Accepts]: Start accepts. Automaton has 19615 states and 23297 transitions. Word has length 280 [2020-10-13 06:17:02,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:02,734 INFO L479 AbstractCegarLoop]: Abstraction has 19615 states and 23297 transitions. [2020-10-13 06:17:02,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:02,734 INFO L276 IsEmpty]: Start isEmpty. Operand 19615 states and 23297 transitions. [2020-10-13 06:17:02,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-13 06:17:02,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:02,759 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:17:02,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:17:02,760 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:02,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:02,760 INFO L82 PathProgramCache]: Analyzing trace with hash 846238852, now seen corresponding path program 1 times [2020-10-13 06:17:02,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:02,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17488235] [2020-10-13 06:17:02,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:02,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:02,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:03,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:06,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:07,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:07,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:07,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-13 06:17:07,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:17:07,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 06:17:07,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:07,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:07,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:17:07,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:17:07,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:08,048 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:08,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:08,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:08,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:08,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:08,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:08,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:17:08,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:08,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:08,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:08,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:08,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:08,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:08,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:08,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:08,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:17:08,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:17:08,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:17:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:08,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:17:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:08,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:08,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:08,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:17:08,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:08,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:17:08,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:17:08,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:08,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:17:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:08,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:08,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:08,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:17:08,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:08,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:17:08,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:08,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:08,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 06:17:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:08,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:08,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 06:17:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:08,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:08,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:08,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:17:08,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:08,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:17:08,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:08,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:08,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 06:17:08,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:08,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 132 proven. 24 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 06:17:08,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17488235] [2020-10-13 06:17:08,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:08,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:17:08,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79296257] [2020-10-13 06:17:08,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:17:08,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:08,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:17:08,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:17:08,556 INFO L87 Difference]: Start difference. First operand 19615 states and 23297 transitions. Second operand 8 states. [2020-10-13 06:17:08,734 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:17:09,110 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:17:10,076 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 06:17:13,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:13,318 INFO L93 Difference]: Finished difference Result 44623 states and 52703 transitions. [2020-10-13 06:17:13,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 06:17:13,319 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 288 [2020-10-13 06:17:13,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:13,388 INFO L225 Difference]: With dead ends: 44623 [2020-10-13 06:17:13,389 INFO L226 Difference]: Without dead ends: 24783 [2020-10-13 06:17:13,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:17:13,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24783 states. [2020-10-13 06:17:13,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24783 to 24292. [2020-10-13 06:17:13,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24292 states. [2020-10-13 06:17:13,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24292 states to 24292 states and 27180 transitions. [2020-10-13 06:17:13,882 INFO L78 Accepts]: Start accepts. Automaton has 24292 states and 27180 transitions. Word has length 288 [2020-10-13 06:17:13,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:13,883 INFO L479 AbstractCegarLoop]: Abstraction has 24292 states and 27180 transitions. [2020-10-13 06:17:13,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:17:13,883 INFO L276 IsEmpty]: Start isEmpty. Operand 24292 states and 27180 transitions. [2020-10-13 06:17:13,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-13 06:17:13,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:13,910 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:17:13,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:17:13,910 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:13,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:13,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1480184517, now seen corresponding path program 1 times [2020-10-13 06:17:13,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:13,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749696236] [2020-10-13 06:17:13,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:14,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:14,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:14,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:16,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:19,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:19,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 06:17:19,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:17:19,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 06:17:19,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 06:17:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 06:17:19,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:19,238 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:19,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:19,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:19,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:19,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:19,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:19,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:17:19,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:19,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:19,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:19,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:19,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:19,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:17:19,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:19,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:17:19,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:19,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:19,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:17:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:19,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:19,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:19,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 06:17:19,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:19,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:17:19,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:19,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:19,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:19,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:19,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:19,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 06:17:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:19,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:19,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:19,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:17:19,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:19,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:17:19,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 06:17:19,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:19,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:17:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:19,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:19,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:19,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:17:19,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:19,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-13 06:17:19,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:17:19,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:19,864 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 06:17:19,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749696236] [2020-10-13 06:17:19,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:19,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:19,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577760805] [2020-10-13 06:17:19,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:19,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:19,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:19,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:19,866 INFO L87 Difference]: Start difference. First operand 24292 states and 27180 transitions. Second operand 7 states. [2020-10-13 06:17:20,026 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:17:21,693 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:17:22,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:22,595 INFO L93 Difference]: Finished difference Result 47168 states and 53547 transitions. [2020-10-13 06:17:22,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:17:22,596 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 321 [2020-10-13 06:17:22,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:22,658 INFO L225 Difference]: With dead ends: 47168 [2020-10-13 06:17:22,658 INFO L226 Difference]: Without dead ends: 24325 [2020-10-13 06:17:22,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:17:22,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24325 states. [2020-10-13 06:17:23,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24325 to 23273. [2020-10-13 06:17:23,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23273 states. [2020-10-13 06:17:23,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23273 states to 23273 states and 25617 transitions. [2020-10-13 06:17:23,136 INFO L78 Accepts]: Start accepts. Automaton has 23273 states and 25617 transitions. Word has length 321 [2020-10-13 06:17:23,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:23,137 INFO L479 AbstractCegarLoop]: Abstraction has 23273 states and 25617 transitions. [2020-10-13 06:17:23,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:23,137 INFO L276 IsEmpty]: Start isEmpty. Operand 23273 states and 25617 transitions. [2020-10-13 06:17:23,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-13 06:17:23,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:23,162 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:17:23,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:17:23,162 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:23,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:23,162 INFO L82 PathProgramCache]: Analyzing trace with hash -906063614, now seen corresponding path program 1 times [2020-10-13 06:17:23,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:23,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376893312] [2020-10-13 06:17:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:23,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:23,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:25,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:26,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:28,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:28,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-13 06:17:28,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:17:28,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 06:17:28,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:17:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 06:17:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:28,450 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:28,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:28,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:28,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:28,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:28,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:28,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:17:28,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:28,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:28,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:28,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:28,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:28,681 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:17:28,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:28,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:28,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:28,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:17:28,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:28,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:17:28,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:17:28,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:28,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:17:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:28,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:28,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:28,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 06:17:28,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:28,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-13 06:17:28,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 06:17:28,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:28,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 06:17:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:28,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:29,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:29,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 06:17:29,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:29,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 06:17:29,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:29,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:29,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 06:17:29,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:29,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:29,256 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 175 proven. 78 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 06:17:29,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376893312] [2020-10-13 06:17:29,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:29,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:29,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16372314] [2020-10-13 06:17:29,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:29,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:29,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:29,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:29,258 INFO L87 Difference]: Start difference. First operand 23273 states and 25617 transitions. Second operand 7 states. [2020-10-13 06:17:29,492 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:17:31,080 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:17:32,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:32,156 INFO L93 Difference]: Finished difference Result 46034 states and 50902 transitions. [2020-10-13 06:17:32,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:17:32,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2020-10-13 06:17:32,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:32,211 INFO L225 Difference]: With dead ends: 46034 [2020-10-13 06:17:32,211 INFO L226 Difference]: Without dead ends: 23976 [2020-10-13 06:17:32,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:17:32,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23976 states. [2020-10-13 06:17:32,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23976 to 23037. [2020-10-13 06:17:32,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23037 states. [2020-10-13 06:17:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23037 states to 23037 states and 25327 transitions. [2020-10-13 06:17:32,647 INFO L78 Accepts]: Start accepts. Automaton has 23037 states and 25327 transitions. Word has length 335 [2020-10-13 06:17:32,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:32,647 INFO L479 AbstractCegarLoop]: Abstraction has 23037 states and 25327 transitions. [2020-10-13 06:17:32,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:32,647 INFO L276 IsEmpty]: Start isEmpty. Operand 23037 states and 25327 transitions. [2020-10-13 06:17:32,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-13 06:17:32,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:32,673 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:17:32,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:17:32,673 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:32,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:32,674 INFO L82 PathProgramCache]: Analyzing trace with hash -395987393, now seen corresponding path program 1 times [2020-10-13 06:17:32,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:32,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940035060] [2020-10-13 06:17:32,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:32,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:33,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:33,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:36,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:37,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:37,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-13 06:17:37,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:17:37,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-13 06:17:37,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:37,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:37,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:17:37,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:17:37,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:38,007 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:38,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:38,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:38,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:38,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:38,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:38,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:17:38,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:38,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:38,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:38,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:38,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:38,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:17:38,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:38,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-13 06:17:38,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:38,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:38,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:38,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:17:38,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:38,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:17:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:38,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:38,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:38,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 06:17:38,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:38,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:17:38,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:38,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:38,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:38,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:17:38,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:38,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 06:17:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:38,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:38,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:38,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 06:17:38,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:38,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 06:17:38,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:38,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:38,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-13 06:17:38,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:38,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 193 proven. 17 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-13 06:17:38,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940035060] [2020-10-13 06:17:38,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:38,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:38,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719836984] [2020-10-13 06:17:38,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:38,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:38,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:38,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:38,704 INFO L87 Difference]: Start difference. First operand 23037 states and 25327 transitions. Second operand 7 states. [2020-10-13 06:17:38,862 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:17:41,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:41,396 INFO L93 Difference]: Finished difference Result 63172 states and 69640 transitions. [2020-10-13 06:17:41,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:17:41,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 346 [2020-10-13 06:17:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:41,481 INFO L225 Difference]: With dead ends: 63172 [2020-10-13 06:17:41,482 INFO L226 Difference]: Without dead ends: 41354 [2020-10-13 06:17:41,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 06:17:41,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41354 states. [2020-10-13 06:17:42,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41354 to 41266. [2020-10-13 06:17:42,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41266 states. [2020-10-13 06:17:42,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41266 states to 41266 states and 45546 transitions. [2020-10-13 06:17:42,229 INFO L78 Accepts]: Start accepts. Automaton has 41266 states and 45546 transitions. Word has length 346 [2020-10-13 06:17:42,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:42,229 INFO L479 AbstractCegarLoop]: Abstraction has 41266 states and 45546 transitions. [2020-10-13 06:17:42,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:42,230 INFO L276 IsEmpty]: Start isEmpty. Operand 41266 states and 45546 transitions. [2020-10-13 06:17:42,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-13 06:17:42,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:42,263 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:17:42,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:17:42,263 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:42,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:42,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2066796912, now seen corresponding path program 1 times [2020-10-13 06:17:42,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:42,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279040960] [2020-10-13 06:17:42,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:42,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:42,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:42,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:45,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:47,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:47,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-13 06:17:47,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:17:47,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4966 [2020-10-13 06:17:47,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:47,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:47,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:17:47,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 06:17:47,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:47,486 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:47,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:47,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:47,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:47,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:47,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:17:47,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:47,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:47,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:47,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:47,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:47,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:17:47,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:47,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 06:17:47,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:47,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:47,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:17:47,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:47,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:17:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:47,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:47,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:47,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 06:17:47,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:47,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-13 06:17:47,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 06:17:47,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 255 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:17:48,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279040960] [2020-10-13 06:17:48,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:48,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:48,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173357283] [2020-10-13 06:17:48,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:48,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:48,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:48,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:48,229 INFO L87 Difference]: Start difference. First operand 41266 states and 45546 transitions. Second operand 7 states. [2020-10-13 06:17:48,896 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:17:49,718 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:17:51,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:51,738 INFO L93 Difference]: Finished difference Result 86988 states and 99289 transitions. [2020-10-13 06:17:51,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:17:51,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 345 [2020-10-13 06:17:51,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:51,841 INFO L225 Difference]: With dead ends: 86988 [2020-10-13 06:17:51,842 INFO L226 Difference]: Without dead ends: 46941 [2020-10-13 06:17:51,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:17:51,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46941 states. [2020-10-13 06:17:52,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46941 to 44320. [2020-10-13 06:17:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44320 states. [2020-10-13 06:17:52,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44320 states to 44320 states and 49126 transitions. [2020-10-13 06:17:52,669 INFO L78 Accepts]: Start accepts. Automaton has 44320 states and 49126 transitions. Word has length 345 [2020-10-13 06:17:52,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:52,670 INFO L479 AbstractCegarLoop]: Abstraction has 44320 states and 49126 transitions. [2020-10-13 06:17:52,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:52,670 INFO L276 IsEmpty]: Start isEmpty. Operand 44320 states and 49126 transitions. [2020-10-13 06:17:52,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-13 06:17:52,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:52,706 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:17:52,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 06:17:52,706 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:52,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:52,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1251282690, now seen corresponding path program 1 times [2020-10-13 06:17:52,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:52,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834939316] [2020-10-13 06:17:52,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:52,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:53,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:54,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:55,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:57,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:57,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-13 06:17:57,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:17:57,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4907 [2020-10-13 06:17:57,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:57,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:57,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:17:57,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 06:17:57,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:57,957 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:57,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:57,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:57,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:57,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:57,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:57,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:17:57,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:57,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:57,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:57,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:57,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:58,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:58,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:58,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:58,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:17:58,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:58,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 06:17:58,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:17:58,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:58,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:17:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:58,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:58,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 06:17:58,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:58,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-13 06:17:58,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 06:17:58,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 302 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:17:58,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834939316] [2020-10-13 06:17:58,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:58,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:58,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351696711] [2020-10-13 06:17:58,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:58,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:58,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:58,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:58,551 INFO L87 Difference]: Start difference. First operand 44320 states and 49126 transitions. Second operand 7 states. [2020-10-13 06:17:58,773 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:17:59,231 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:18:02,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:02,438 INFO L93 Difference]: Finished difference Result 110577 states and 122751 transitions. [2020-10-13 06:18:02,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:18:02,439 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 374 [2020-10-13 06:18:02,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:02,621 INFO L225 Difference]: With dead ends: 110577 [2020-10-13 06:18:02,621 INFO L226 Difference]: Without dead ends: 67476 [2020-10-13 06:18:02,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:18:02,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67476 states. [2020-10-13 06:18:03,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67476 to 67133. [2020-10-13 06:18:03,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67133 states. [2020-10-13 06:18:03,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67133 states to 67133 states and 73979 transitions. [2020-10-13 06:18:03,734 INFO L78 Accepts]: Start accepts. Automaton has 67133 states and 73979 transitions. Word has length 374 [2020-10-13 06:18:03,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:03,735 INFO L479 AbstractCegarLoop]: Abstraction has 67133 states and 73979 transitions. [2020-10-13 06:18:03,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:18:03,735 INFO L276 IsEmpty]: Start isEmpty. Operand 67133 states and 73979 transitions. [2020-10-13 06:18:03,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-13 06:18:03,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:03,784 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:18:03,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 06:18:03,784 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:03,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:03,785 INFO L82 PathProgramCache]: Analyzing trace with hash 288765374, now seen corresponding path program 1 times [2020-10-13 06:18:03,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:03,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58696471] [2020-10-13 06:18:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:03,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:04,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:04,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:05,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:08,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:08,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-13 06:18:08,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:18:08,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 06:18:08,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:08,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:08,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:18:08,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 06:18:08,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:09,175 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:09,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:09,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:09,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:09,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:09,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:09,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:18:09,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:09,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:09,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:09,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:09,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:18:09,310 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:18:09,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:18:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:09,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:09,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:09,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:18:09,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:09,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-13 06:18:09,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:09,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:09,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:09,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:18:09,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:09,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:18:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:09,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:09,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:09,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:18:09,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:09,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 06:18:09,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:09,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:09,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:18:09,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 06:18:09,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:09,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-13 06:18:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:09,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:09,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:09,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 06:18:09,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:09,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 06:18:09,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:09,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:09,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 06:18:09,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:09,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:10,059 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 264 proven. 44 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-13 06:18:10,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58696471] [2020-10-13 06:18:10,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:18:10,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:18:10,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097576542] [2020-10-13 06:18:10,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:18:10,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:10,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:18:10,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:18:10,061 INFO L87 Difference]: Start difference. First operand 67133 states and 73979 transitions. Second operand 7 states. [2020-10-13 06:18:10,311 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:18:11,338 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:18:14,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:14,234 INFO L93 Difference]: Finished difference Result 124037 states and 140507 transitions. [2020-10-13 06:18:14,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:18:14,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 390 [2020-10-13 06:18:14,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:14,390 INFO L225 Difference]: With dead ends: 124037 [2020-10-13 06:18:14,390 INFO L226 Difference]: Without dead ends: 70774 [2020-10-13 06:18:14,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:18:14,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70774 states. [2020-10-13 06:18:15,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70774 to 69616. [2020-10-13 06:18:15,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69616 states. [2020-10-13 06:18:15,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69616 states to 69616 states and 76698 transitions. [2020-10-13 06:18:15,583 INFO L78 Accepts]: Start accepts. Automaton has 69616 states and 76698 transitions. Word has length 390 [2020-10-13 06:18:15,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:15,584 INFO L479 AbstractCegarLoop]: Abstraction has 69616 states and 76698 transitions. [2020-10-13 06:18:15,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:18:15,584 INFO L276 IsEmpty]: Start isEmpty. Operand 69616 states and 76698 transitions. [2020-10-13 06:18:15,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-13 06:18:15,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:15,619 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:18:15,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 06:18:15,619 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:15,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:15,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1345292475, now seen corresponding path program 1 times [2020-10-13 06:18:15,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:15,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618574787] [2020-10-13 06:18:15,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:15,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:16,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:17,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:18,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:20,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:20,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-13 06:18:20,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:18:20,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-13 06:18:20,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:20,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:20,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:18:20,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-13 06:18:20,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:20,952 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:20,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:20,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:20,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:20,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:20,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:18:20,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:20,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:20,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:20,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:20,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:21,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:18:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:21,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:21,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:21,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:18:21,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:21,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:18:21,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:21,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:21,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:21,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:18:21,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:21,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:18:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:21,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:21,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:21,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 06:18:21,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:21,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-13 06:18:21,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:18:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-13 06:18:21,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:21,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-13 06:18:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:21,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:21,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:21,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 06:18:21,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:21,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 06:18:21,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:18:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 06:18:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:18:21,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:22,649 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 239 proven. 81 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 06:18:22,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618574787] [2020-10-13 06:18:22,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:18:22,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:18:22,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406212656] [2020-10-13 06:18:22,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:18:22,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:22,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:18:22,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:18:22,652 INFO L87 Difference]: Start difference. First operand 69616 states and 76698 transitions. Second operand 7 states. [2020-10-13 06:18:22,923 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:18:24,574 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:18:26,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:26,443 INFO L93 Difference]: Finished difference Result 144942 states and 163546 transitions. [2020-10-13 06:18:26,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 06:18:26,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 399 [2020-10-13 06:18:26,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:26,445 INFO L225 Difference]: With dead ends: 144942 [2020-10-13 06:18:26,445 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 06:18:26,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:18:26,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 06:18:26,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 06:18:26,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 06:18:26,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 06:18:26,613 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 399 [2020-10-13 06:18:26,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:26,613 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 06:18:26,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:18:26,614 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 06:18:26,614 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 06:18:26,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 06:18:26,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.