/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_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:18:32,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:18:32,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:18:32,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:18:32,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:18:32,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:18:32,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:18:32,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:18:32,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:18:32,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:18:32,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:18:32,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:18:32,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:18:32,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:18:32,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:18:32,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:18:32,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:18:32,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:18:32,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:18:32,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:18:32,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:18:32,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:18:32,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:18:32,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:18:32,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:18:32,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:18:32,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:18:32,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:18:32,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:18:32,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:18:32,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:18:32,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:18:32,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:18:32,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:18:32,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:18:32,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:18:32,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:18:32,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:18:32,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:18:32,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:18:32,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:18:32,238 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 06:18:32,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:18:32,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:18:32,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:18:32,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:18:32,275 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:18:32,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:18:32,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:18:32,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:18:32,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:18:32,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:18:32,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:18:32,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:18:32,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:18:32,278 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:18:32,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:18:32,279 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:18:32,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:18:32,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:18:32,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:18:32,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:18:32,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:18:32,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:18:32,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:18:32,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:18:32,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:18:32,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:18:32,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:18:32,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:18:32,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:18:32,281 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 06:18:32,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:18:32,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:18:32,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:18:32,609 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:18:32,609 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:18:32,610 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label22.c [2020-10-13 06:18:32,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eba27a16a/e2db2eda3ab74fc4981cf4e94dee4b26/FLAG878266ba5 [2020-10-13 06:18:33,334 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:18:33,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label22.c [2020-10-13 06:18:33,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eba27a16a/e2db2eda3ab74fc4981cf4e94dee4b26/FLAG878266ba5 [2020-10-13 06:18:33,568 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eba27a16a/e2db2eda3ab74fc4981cf4e94dee4b26 [2020-10-13 06:18:33,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:18:33,579 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:18:33,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:18:33,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:18:33,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:18:33,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:18:33" (1/1) ... [2020-10-13 06:18:33,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@291cbb33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:33, skipping insertion in model container [2020-10-13 06:18:33,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:18:33" (1/1) ... [2020-10-13 06:18:33,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:18:33,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:18:34,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:18:34,689 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:18:35,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:18:35,114 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:18:35,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:35 WrapperNode [2020-10-13 06:18:35,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:18:35,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:18:35,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:18:35,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:18:35,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:35" (1/1) ... [2020-10-13 06:18:35,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:35" (1/1) ... [2020-10-13 06:18:35,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:35" (1/1) ... [2020-10-13 06:18:35,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:35" (1/1) ... [2020-10-13 06:18:35,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:35" (1/1) ... [2020-10-13 06:18:35,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:35" (1/1) ... [2020-10-13 06:18:35,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:35" (1/1) ... [2020-10-13 06:18:35,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:18:35,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:18:35,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:18:35,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:18:35,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:35" (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 06:18:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:18:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:18:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:18:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:18:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:18:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:18:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:18:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:18:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:18:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:18:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:18:37,260 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:18:37,261 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:18:37,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:18:37 BoogieIcfgContainer [2020-10-13 06:18:37,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:18:37,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:18:37,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:18:37,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:18:37,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:18:33" (1/3) ... [2020-10-13 06:18:37,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6daab59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:18:37, skipping insertion in model container [2020-10-13 06:18:37,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:35" (2/3) ... [2020-10-13 06:18:37,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6daab59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:18:37, skipping insertion in model container [2020-10-13 06:18:37,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:18:37" (3/3) ... [2020-10-13 06:18:37,285 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label22.c [2020-10-13 06:18:37,295 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:18:37,308 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:18:37,321 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:18:37,354 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:18:37,355 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:18:37,355 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:18:37,356 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:18:37,356 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:18:37,356 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:18:37,356 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:18:37,356 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:18:37,390 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:18:37,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 06:18:37,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:37,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:18:37,413 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:37,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:37,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1955035064, now seen corresponding path program 1 times [2020-10-13 06:18:37,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:37,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75812396] [2020-10-13 06:18:37,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:38,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:38,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:42,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:42,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 06:18:42,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:18:42,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4581 [2020-10-13 06:18:42,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:42,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:18:42,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:18:42,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:18:42,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:18:43,216 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 61 [2020-10-13 06:18:44,085 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:44,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:44,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:44,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:44,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:44,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:44,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:18:44,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:18:44,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:44,348 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-10-13 06:18:45,159 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 06:18:45,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75812396] [2020-10-13 06:18:45,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:18:45,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 06:18:45,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595398161] [2020-10-13 06:18:45,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 06:18:45,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:45,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 06:18:45,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-13 06:18:45,181 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 14 states. [2020-10-13 06:18:45,541 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 06:18:46,327 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 173 [2020-10-13 06:18:47,020 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 173 [2020-10-13 06:18:47,815 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 181 [2020-10-13 06:18:48,662 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 180 [2020-10-13 06:18:49,674 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 179 [2020-10-13 06:18:50,801 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 178 [2020-10-13 06:18:53,657 WARN L193 SmtUtils]: Spent 970.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 177 [2020-10-13 06:18:54,535 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 175 [2020-10-13 06:18:56,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:56,607 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:18:56,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:18:56,609 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 173 [2020-10-13 06:18:56,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:56,630 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:18:56,630 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:18:56,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2020-10-13 06:18:56,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:18:56,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:18:56,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:18:56,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:18:56,713 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 173 [2020-10-13 06:18:56,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:56,714 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:18:56,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 06:18:56,715 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:18:56,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-13 06:18:56,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:56,721 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:18:56,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:18:56,721 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:56,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:56,722 INFO L82 PathProgramCache]: Analyzing trace with hash 951653407, now seen corresponding path program 1 times [2020-10-13 06:18:56,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:56,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274581956] [2020-10-13 06:18:56,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:56,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:57,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:01,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:01,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 06:19:01,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:19:01,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 06:19:01,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:01,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 06:19:01,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:19:01,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:19:01,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 06:19:02,708 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-13 06:19:02,874 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2020-10-13 06:19:03,175 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2020-10-13 06:19:03,377 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-10-13 06:19:03,558 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2020-10-13 06:19:03,730 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-10-13 06:19:03,860 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-10-13 06:19:04,087 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:04,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:04,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:04,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:04,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:04,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:04,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:19:04,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:04,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:04,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:19:04,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:04,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:04,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:04,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:04,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:19:04,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:04,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 06:19:04,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:04,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:19:04,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:04,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:19:04,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:04,497 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-13 06:19:05,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:19:05,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274581956] [2020-10-13 06:19:05,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:05,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 06:19:05,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042705555] [2020-10-13 06:19:05,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 06:19:05,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:05,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 06:19:05,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:19:05,032 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-13 06:19:05,225 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-13 06:19:05,593 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 91 [2020-10-13 06:19:05,866 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2020-10-13 06:19:06,224 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 97 [2020-10-13 06:19:06,921 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 183 [2020-10-13 06:19:07,735 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 203 [2020-10-13 06:19:08,605 WARN L193 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 200 [2020-10-13 06:19:08,987 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 06:19:09,707 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-13 06:19:10,888 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 197 [2020-10-13 06:19:13,588 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 194 [2020-10-13 06:19:17,201 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 191 [2020-10-13 06:19:18,095 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 186 [2020-10-13 06:19:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:21,737 INFO L93 Difference]: Finished difference Result 1216 states and 1990 transitions. [2020-10-13 06:19:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 06:19:21,738 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 184 [2020-10-13 06:19:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:21,756 INFO L225 Difference]: With dead ends: 1216 [2020-10-13 06:19:21,756 INFO L226 Difference]: Without dead ends: 973 [2020-10-13 06:19:21,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=236, Invalid=634, Unknown=0, NotChecked=0, Total=870 [2020-10-13 06:19:21,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-10-13 06:19:21,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 955. [2020-10-13 06:19:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955 states. [2020-10-13 06:19:21,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1341 transitions. [2020-10-13 06:19:21,843 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1341 transitions. Word has length 184 [2020-10-13 06:19:21,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:21,844 INFO L479 AbstractCegarLoop]: Abstraction has 955 states and 1341 transitions. [2020-10-13 06:19:21,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 06:19:21,844 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1341 transitions. [2020-10-13 06:19:21,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-13 06:19:21,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:21,852 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:21,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:19:21,852 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:21,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:21,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1544743085, now seen corresponding path program 1 times [2020-10-13 06:19:21,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:21,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550894498] [2020-10-13 06:19:21,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:22,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:22,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:23,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:23,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-13 06:19:23,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:19:23,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1663 [2020-10-13 06:19:23,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:19:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-13 06:19:23,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:23,884 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:23,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:23,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:23,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:23,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:23,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:23,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:19:23,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:23,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:23,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:23,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:24,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:24,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:24,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:24,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:19:24,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:19:24,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:19:24,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:19:24,184 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 06:19:24,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550894498] [2020-10-13 06:19:24,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:24,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:19:24,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690612868] [2020-10-13 06:19:24,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:19:24,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:24,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:19:24,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:19:24,200 INFO L87 Difference]: Start difference. First operand 955 states and 1341 transitions. Second operand 5 states. [2020-10-13 06:19:24,560 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:19:26,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:26,988 INFO L93 Difference]: Finished difference Result 2441 states and 3605 transitions. [2020-10-13 06:19:26,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:19:26,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-13 06:19:26,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:27,007 INFO L225 Difference]: With dead ends: 2441 [2020-10-13 06:19:27,007 INFO L226 Difference]: Without dead ends: 1607 [2020-10-13 06:19:27,011 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 06:19:27,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2020-10-13 06:19:27,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1606. [2020-10-13 06:19:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-10-13 06:19:27,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2223 transitions. [2020-10-13 06:19:27,072 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2223 transitions. Word has length 194 [2020-10-13 06:19:27,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:27,073 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 2223 transitions. [2020-10-13 06:19:27,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:19:27,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2223 transitions. [2020-10-13 06:19:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-13 06:19:27,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:27,081 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:27,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:19:27,081 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:27,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:27,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1217970012, now seen corresponding path program 1 times [2020-10-13 06:19:27,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:27,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251892207] [2020-10-13 06:19:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:27,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:27,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:28,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:28,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:28,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 06:19:28,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:19:28,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1538 [2020-10-13 06:19:28,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:28,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:19:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:19:28,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:28,814 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:28,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:28,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:28,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:28,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:28,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:28,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:19:28,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:28,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:28,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:28,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:28,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:28,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:28,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:28,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:28,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:19:28,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:28,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:19:28,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:28,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:19:28,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:28,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:19:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:28,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:28,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:28,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:19:28,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:19:28,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:19:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:19:29,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251892207] [2020-10-13 06:19:29,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:29,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:19:29,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995146398] [2020-10-13 06:19:29,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:29,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:29,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:29,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:29,045 INFO L87 Difference]: Start difference. First operand 1606 states and 2223 transitions. Second operand 7 states. [2020-10-13 06:19:29,328 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:19:29,797 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:19:33,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:33,968 INFO L93 Difference]: Finished difference Result 5863 states and 9499 transitions. [2020-10-13 06:19:33,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:19:33,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-13 06:19:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:34,009 INFO L225 Difference]: With dead ends: 5863 [2020-10-13 06:19:34,010 INFO L226 Difference]: Without dead ends: 4378 [2020-10-13 06:19:34,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:19:34,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4378 states. [2020-10-13 06:19:34,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4378 to 4263. [2020-10-13 06:19:34,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4263 states. [2020-10-13 06:19:34,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4263 states to 4263 states and 6123 transitions. [2020-10-13 06:19:34,216 INFO L78 Accepts]: Start accepts. Automaton has 4263 states and 6123 transitions. Word has length 204 [2020-10-13 06:19:34,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:34,217 INFO L479 AbstractCegarLoop]: Abstraction has 4263 states and 6123 transitions. [2020-10-13 06:19:34,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:34,217 INFO L276 IsEmpty]: Start isEmpty. Operand 4263 states and 6123 transitions. [2020-10-13 06:19:34,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-13 06:19:34,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:34,235 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:34,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:19:34,235 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:34,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:34,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1171011483, now seen corresponding path program 1 times [2020-10-13 06:19:34,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:34,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895607052] [2020-10-13 06:19:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:34,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:34,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:37,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:37,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-13 06:19:37,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:19:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3153 [2020-10-13 06:19:37,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:19:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:19:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:19:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:37,643 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:37,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:37,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:37,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:37,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:37,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:37,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:19:37,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:19:37,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:19:37,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:37,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:37,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:37,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:19:37,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:37,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 06:19:37,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:37,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:37,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:37,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:19:37,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:19:38,032 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:19:38,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895607052] [2020-10-13 06:19:38,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:19:38,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:19:38,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113120660] [2020-10-13 06:19:38,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:38,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:38,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:38,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:38,036 INFO L87 Difference]: Start difference. First operand 4263 states and 6123 transitions. Second operand 7 states. [2020-10-13 06:19:38,253 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:19:38,795 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:19:41,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:41,285 INFO L93 Difference]: Finished difference Result 10881 states and 16073 transitions. [2020-10-13 06:19:41,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:19:41,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-10-13 06:19:41,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:41,330 INFO L225 Difference]: With dead ends: 10881 [2020-10-13 06:19:41,330 INFO L226 Difference]: Without dead ends: 6763 [2020-10-13 06:19:41,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:19:41,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2020-10-13 06:19:41,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6586. [2020-10-13 06:19:41,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6586 states. [2020-10-13 06:19:41,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6586 states to 6586 states and 9418 transitions. [2020-10-13 06:19:41,568 INFO L78 Accepts]: Start accepts. Automaton has 6586 states and 9418 transitions. Word has length 205 [2020-10-13 06:19:41,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:41,568 INFO L479 AbstractCegarLoop]: Abstraction has 6586 states and 9418 transitions. [2020-10-13 06:19:41,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:41,569 INFO L276 IsEmpty]: Start isEmpty. Operand 6586 states and 9418 transitions. [2020-10-13 06:19:41,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-13 06:19:41,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:41,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:41,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:19:41,593 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:41,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:41,593 INFO L82 PathProgramCache]: Analyzing trace with hash -464059381, now seen corresponding path program 1 times [2020-10-13 06:19:41,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:41,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337899614] [2020-10-13 06:19:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:41,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:41,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:42,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:44,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:44,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-13 06:19:44,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:19:44,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3223 [2020-10-13 06:19:44,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:19:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:19:44,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:45,072 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:45,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:45,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:45,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:45,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:45,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:45,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:19:45,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:45,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:45,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:45,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:45,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:19:45,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:45,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:45,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:45,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:19:45,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:45,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 06:19:45,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:45,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:45,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:45,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:19:45,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:19:45,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:19:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:45,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:45,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:45,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:19:45,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:45,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 06:19:45,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:45,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:45,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:45,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:19:45,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:19:45,604 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:19:45,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337899614] [2020-10-13 06:19:45,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:45,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:19:45,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693885633] [2020-10-13 06:19:45,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:19:45,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:45,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:19:45,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:19:45,615 INFO L87 Difference]: Start difference. First operand 6586 states and 9418 transitions. Second operand 8 states. [2020-10-13 06:19:45,828 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:19:46,129 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:19:47,030 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:19:50,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:50,134 INFO L93 Difference]: Finished difference Result 16274 states and 23584 transitions. [2020-10-13 06:19:50,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 06:19:50,135 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 208 [2020-10-13 06:19:50,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:50,204 INFO L225 Difference]: With dead ends: 16274 [2020-10-13 06:19:50,204 INFO L226 Difference]: Without dead ends: 10051 [2020-10-13 06:19:50,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 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 06:19:50,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10051 states. [2020-10-13 06:19:50,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10051 to 9840. [2020-10-13 06:19:50,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9840 states. [2020-10-13 06:19:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9840 states to 9840 states and 12799 transitions. [2020-10-13 06:19:50,721 INFO L78 Accepts]: Start accepts. Automaton has 9840 states and 12799 transitions. Word has length 208 [2020-10-13 06:19:50,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:50,721 INFO L479 AbstractCegarLoop]: Abstraction has 9840 states and 12799 transitions. [2020-10-13 06:19:50,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:19:50,722 INFO L276 IsEmpty]: Start isEmpty. Operand 9840 states and 12799 transitions. [2020-10-13 06:19:50,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-13 06:19:50,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:50,744 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:50,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:19:50,744 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:50,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:50,745 INFO L82 PathProgramCache]: Analyzing trace with hash 2067172143, now seen corresponding path program 1 times [2020-10-13 06:19:50,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:50,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933527665] [2020-10-13 06:19:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:50,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:51,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:51,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:53,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:53,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-13 06:19:53,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:19:53,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2852 [2020-10-13 06:19:53,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:53,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:53,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:19:53,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:19:53,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:53,825 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:53,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:53,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:53,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:53,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:53,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:53,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:19:53,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:53,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:53,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:53,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:53,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:53,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:19:53,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 06:19:53,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:53,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:53,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:53,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:19:53,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:53,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:19:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:54,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:54,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:54,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:19:54,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:54,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:19:54,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:54,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:54,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:54,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:19:54,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:19:54,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933527665] [2020-10-13 06:19:54,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:54,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:19:54,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454787439] [2020-10-13 06:19:54,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:54,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:54,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:54,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:54,146 INFO L87 Difference]: Start difference. First operand 9840 states and 12799 transitions. Second operand 7 states. [2020-10-13 06:19:54,419 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:19:55,447 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:19:57,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:57,462 INFO L93 Difference]: Finished difference Result 24720 states and 37091 transitions. [2020-10-13 06:19:57,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:19:57,463 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-10-13 06:19:57,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:57,552 INFO L225 Difference]: With dead ends: 24720 [2020-10-13 06:19:57,552 INFO L226 Difference]: Without dead ends: 17113 [2020-10-13 06:19:57,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:19:57,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17113 states. [2020-10-13 06:19:58,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17113 to 16484. [2020-10-13 06:19:58,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16484 states. [2020-10-13 06:19:58,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16484 states to 16484 states and 20982 transitions. [2020-10-13 06:19:58,192 INFO L78 Accepts]: Start accepts. Automaton has 16484 states and 20982 transitions. Word has length 210 [2020-10-13 06:19:58,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:58,193 INFO L479 AbstractCegarLoop]: Abstraction has 16484 states and 20982 transitions. [2020-10-13 06:19:58,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:58,193 INFO L276 IsEmpty]: Start isEmpty. Operand 16484 states and 20982 transitions. [2020-10-13 06:19:58,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-13 06:19:58,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:58,227 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, 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] [2020-10-13 06:19:58,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:19:58,227 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:58,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:58,228 INFO L82 PathProgramCache]: Analyzing trace with hash 453703958, now seen corresponding path program 1 times [2020-10-13 06:19:58,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:58,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826133733] [2020-10-13 06:19:58,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:58,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:58,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:59,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:00,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:00,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-13 06:20:00,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:20:00,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2242 [2020-10-13 06:20:00,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:20:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:20:00,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:00,685 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:00,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:00,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:00,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:00,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:00,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:00,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:20:00,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:00,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:00,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:00,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:00,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:00,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:00,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:00,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:00,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:20:00,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:00,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:20:00,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:00,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:00,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:00,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:20:00,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:00,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:20:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:00,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:00,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:00,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:20:00,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:00,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 06:20:00,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:00,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:00,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:00,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:20:00,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:20:01,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826133733] [2020-10-13 06:20:01,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:01,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:01,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471669958] [2020-10-13 06:20:01,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:01,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:01,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:01,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:01,019 INFO L87 Difference]: Start difference. First operand 16484 states and 20982 transitions. Second operand 7 states. [2020-10-13 06:20:01,349 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:20:02,583 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:20:04,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:04,946 INFO L93 Difference]: Finished difference Result 42330 states and 60051 transitions. [2020-10-13 06:20:04,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:20:04,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-13 06:20:04,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:05,087 INFO L225 Difference]: With dead ends: 42330 [2020-10-13 06:20:05,088 INFO L226 Difference]: Without dead ends: 26209 [2020-10-13 06:20:05,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:20:05,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26209 states. [2020-10-13 06:20:05,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26209 to 25349. [2020-10-13 06:20:05,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25349 states. [2020-10-13 06:20:06,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25349 states to 25349 states and 32063 transitions. [2020-10-13 06:20:06,012 INFO L78 Accepts]: Start accepts. Automaton has 25349 states and 32063 transitions. Word has length 242 [2020-10-13 06:20:06,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:06,012 INFO L479 AbstractCegarLoop]: Abstraction has 25349 states and 32063 transitions. [2020-10-13 06:20:06,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:06,013 INFO L276 IsEmpty]: Start isEmpty. Operand 25349 states and 32063 transitions. [2020-10-13 06:20:06,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-13 06:20:06,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:06,073 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:20:06,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:20:06,074 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:06,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:06,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1257216773, now seen corresponding path program 1 times [2020-10-13 06:20:06,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:06,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015656257] [2020-10-13 06:20:06,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:06,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:06,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:08,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:09,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:11,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:11,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-13 06:20:11,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:20:11,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 06:20:11,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:20:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 06:20:11,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:11,333 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:11,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:11,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:11,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:11,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:11,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:11,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:20:11,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:11,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:11,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:11,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:11,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:11,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:11,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:20:11,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:11,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:20:11,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:20:11,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:11,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:20:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:11,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:11,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:11,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:20:11,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:11,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 06:20:11,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:11,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:11,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:11,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:20:11,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:11,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 06:20:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:11,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:11,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:11,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:20:11,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:20:11,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 06:20:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:11,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:11,688 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 134 proven. 33 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 06:20:11,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015656257] [2020-10-13 06:20:11,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:11,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:11,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953469172] [2020-10-13 06:20:11,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:11,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:11,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:11,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:11,691 INFO L87 Difference]: Start difference. First operand 25349 states and 32063 transitions. Second operand 7 states. [2020-10-13 06:20:11,991 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:20:12,892 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:20:16,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:16,616 INFO L93 Difference]: Finished difference Result 62941 states and 82872 transitions. [2020-10-13 06:20:16,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:20:16,616 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-13 06:20:16,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:16,773 INFO L225 Difference]: With dead ends: 62941 [2020-10-13 06:20:16,773 INFO L226 Difference]: Without dead ends: 38283 [2020-10-13 06:20:16,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:20:16,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38283 states. [2020-10-13 06:20:17,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38283 to 37726. [2020-10-13 06:20:17,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37726 states. [2020-10-13 06:20:17,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37726 states to 37726 states and 46463 transitions. [2020-10-13 06:20:17,623 INFO L78 Accepts]: Start accepts. Automaton has 37726 states and 46463 transitions. Word has length 280 [2020-10-13 06:20:17,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:17,623 INFO L479 AbstractCegarLoop]: Abstraction has 37726 states and 46463 transitions. [2020-10-13 06:20:17,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:17,623 INFO L276 IsEmpty]: Start isEmpty. Operand 37726 states and 46463 transitions. [2020-10-13 06:20:17,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-13 06:20:17,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:17,657 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:20:17,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:20:17,657 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:17,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:17,658 INFO L82 PathProgramCache]: Analyzing trace with hash -567351914, now seen corresponding path program 1 times [2020-10-13 06:20:17,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:17,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903091741] [2020-10-13 06:20:17,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:17,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:18,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:18,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:21,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:21,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-13 06:20:21,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:20:21,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3606 [2020-10-13 06:20:21,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:20:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-13 06:20:21,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:21,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:21,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:21,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:21,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:21,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:21,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:20:21,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:21,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:21,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:21,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:21,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:21,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:21,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:20:21,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:21,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 06:20:21,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:21,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:21,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:20:21,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 102 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:20:21,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903091741] [2020-10-13 06:20:21,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:21,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:20:21,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532969816] [2020-10-13 06:20:21,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:20:21,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:21,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:20:21,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:20:21,874 INFO L87 Difference]: Start difference. First operand 37726 states and 46463 transitions. Second operand 5 states. [2020-10-13 06:20:24,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:24,608 INFO L93 Difference]: Finished difference Result 74701 states and 92002 transitions. [2020-10-13 06:20:24,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:20:24,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 279 [2020-10-13 06:20:24,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:24,744 INFO L225 Difference]: With dead ends: 74701 [2020-10-13 06:20:24,745 INFO L226 Difference]: Without dead ends: 37798 [2020-10-13 06:20:24,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:20:24,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37798 states. [2020-10-13 06:20:25,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37798 to 37722. [2020-10-13 06:20:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37722 states. [2020-10-13 06:20:25,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37722 states to 37722 states and 45188 transitions. [2020-10-13 06:20:25,727 INFO L78 Accepts]: Start accepts. Automaton has 37722 states and 45188 transitions. Word has length 279 [2020-10-13 06:20:25,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:25,727 INFO L479 AbstractCegarLoop]: Abstraction has 37722 states and 45188 transitions. [2020-10-13 06:20:25,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:20:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand 37722 states and 45188 transitions. [2020-10-13 06:20:25,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-13 06:20:25,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:25,757 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:20:25,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:20:25,758 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:25,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:25,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1757489001, now seen corresponding path program 1 times [2020-10-13 06:20:25,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:25,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707709532] [2020-10-13 06:20:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:25,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:25,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:26,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:28,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:29,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:30,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:30,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-13 06:20:30,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:20:30,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5175 [2020-10-13 06:20:30,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:30,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:30,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:20:30,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:20:30,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:31,108 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:31,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:31,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:31,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:31,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:31,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:31,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:20:31,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:31,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:31,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:31,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:31,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:31,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:31,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:31,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:31,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:20:31,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:31,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 06:20:31,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:31,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:31,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:31,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:20:31,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:31,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:20:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:31,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:31,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:31,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:20:31,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:31,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 06:20:31,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:31,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:31,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:31,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:20:31,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:31,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 06:20:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:31,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:31,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:31,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:20:31,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:31,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 06:20:31,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 06:20:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:31,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 117 proven. 15 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-13 06:20:31,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707709532] [2020-10-13 06:20:31,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:31,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:31,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046033059] [2020-10-13 06:20:31,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:31,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:31,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:31,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:31,536 INFO L87 Difference]: Start difference. First operand 37722 states and 45188 transitions. Second operand 7 states. [2020-10-13 06:20:31,888 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:20:32,916 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:20:35,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:35,002 INFO L93 Difference]: Finished difference Result 76803 states and 93574 transitions. [2020-10-13 06:20:35,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:20:35,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 282 [2020-10-13 06:20:35,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:35,116 INFO L225 Difference]: With dead ends: 76803 [2020-10-13 06:20:35,116 INFO L226 Difference]: Without dead ends: 46373 [2020-10-13 06:20:35,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:20:35,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46373 states. [2020-10-13 06:20:36,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46373 to 46121. [2020-10-13 06:20:36,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46121 states. [2020-10-13 06:20:36,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46121 states to 46121 states and 55492 transitions. [2020-10-13 06:20:36,205 INFO L78 Accepts]: Start accepts. Automaton has 46121 states and 55492 transitions. Word has length 282 [2020-10-13 06:20:36,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:36,206 INFO L479 AbstractCegarLoop]: Abstraction has 46121 states and 55492 transitions. [2020-10-13 06:20:36,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:36,206 INFO L276 IsEmpty]: Start isEmpty. Operand 46121 states and 55492 transitions. [2020-10-13 06:20:36,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-13 06:20:36,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:36,251 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:20:36,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:20:36,251 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:36,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:36,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1346216552, now seen corresponding path program 1 times [2020-10-13 06:20:36,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:36,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897823580] [2020-10-13 06:20:36,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:36,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:38,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:39,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:41,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:41,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-13 06:20:41,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:20:41,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 06:20:41,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:41,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:41,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:20:41,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:20:41,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:41,615 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:41,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:41,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:41,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:41,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:41,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:41,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:20:41,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:41,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:41,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:41,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:41,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:20:41,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:41,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:41,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:41,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:20:41,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:41,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:20:41,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:41,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:41,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:41,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:20:41,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:20:41,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:20:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:41,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:42,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:42,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:20:42,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:42,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-13 06:20:42,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:42,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:42,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:42,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:20:42,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:42,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 06:20:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:42,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:42,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:42,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:20:42,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:42,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 06:20:42,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:42,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:42,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 06:20:42,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:42,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:20:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 126 proven. 33 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 06:20:42,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897823580] [2020-10-13 06:20:42,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:42,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:42,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110879094] [2020-10-13 06:20:42,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:42,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:42,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:42,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:42,498 INFO L87 Difference]: Start difference. First operand 46121 states and 55492 transitions. Second operand 7 states. [2020-10-13 06:20:42,816 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:20:43,748 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:20:47,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:47,126 INFO L93 Difference]: Finished difference Result 98070 states and 118501 transitions. [2020-10-13 06:20:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:20:47,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-10-13 06:20:47,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:47,207 INFO L225 Difference]: With dead ends: 98070 [2020-10-13 06:20:47,207 INFO L226 Difference]: Without dead ends: 45958 [2020-10-13 06:20:47,258 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 06:20:47,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45958 states. [2020-10-13 06:20:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45958 to 43036. [2020-10-13 06:20:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43036 states. [2020-10-13 06:20:48,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43036 states to 43036 states and 49371 transitions. [2020-10-13 06:20:48,094 INFO L78 Accepts]: Start accepts. Automaton has 43036 states and 49371 transitions. Word has length 286 [2020-10-13 06:20:48,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:48,094 INFO L479 AbstractCegarLoop]: Abstraction has 43036 states and 49371 transitions. [2020-10-13 06:20:48,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:48,095 INFO L276 IsEmpty]: Start isEmpty. Operand 43036 states and 49371 transitions. [2020-10-13 06:20:48,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-13 06:20:48,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:48,136 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:20:48,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:20:48,137 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:48,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:48,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1049728564, now seen corresponding path program 1 times [2020-10-13 06:20:48,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:48,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400557235] [2020-10-13 06:20:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:48,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:48,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:50,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:52,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:53,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:53,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-13 06:20:53,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:20:53,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5200 [2020-10-13 06:20:53,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:20:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:20:53,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:53,668 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:53,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:53,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:53,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:53,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:53,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:53,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:20:53,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:53,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:53,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:53,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:53,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:20:53,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:53,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:53,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:53,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:20:53,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:53,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 06:20:53,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:53,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:20:53,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:20:53,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:20:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:53,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:54,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:54,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:20:54,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:54,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-13 06:20:54,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:54,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:20:54,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:20:54,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 06:20:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:54,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:54,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:54,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:20:54,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:20:54,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 06:20:54,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:54,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:20:54,602 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 154 proven. 33 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 06:20:54,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400557235] [2020-10-13 06:20:54,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:54,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:54,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231310622] [2020-10-13 06:20:54,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:54,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:54,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:54,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:54,607 INFO L87 Difference]: Start difference. First operand 43036 states and 49371 transitions. Second operand 7 states. [2020-10-13 06:20:54,954 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:20:55,378 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:20:58,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:58,482 INFO L93 Difference]: Finished difference Result 83792 states and 95891 transitions. [2020-10-13 06:20:58,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:20:58,483 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-13 06:20:58,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:58,598 INFO L225 Difference]: With dead ends: 83792 [2020-10-13 06:20:58,599 INFO L226 Difference]: Without dead ends: 54871 [2020-10-13 06:20:58,645 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 06:20:58,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54871 states. [2020-10-13 06:20:59,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54871 to 53152. [2020-10-13 06:20:59,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53152 states. [2020-10-13 06:20:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53152 states to 53152 states and 61213 transitions. [2020-10-13 06:20:59,637 INFO L78 Accepts]: Start accepts. Automaton has 53152 states and 61213 transitions. Word has length 300 [2020-10-13 06:20:59,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:59,637 INFO L479 AbstractCegarLoop]: Abstraction has 53152 states and 61213 transitions. [2020-10-13 06:20:59,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 53152 states and 61213 transitions. [2020-10-13 06:20:59,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-13 06:20:59,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:59,695 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:20:59,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:20:59,695 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:59,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:59,696 INFO L82 PathProgramCache]: Analyzing trace with hash 562193728, now seen corresponding path program 1 times [2020-10-13 06:20:59,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:59,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620610568] [2020-10-13 06:20:59,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:59,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:59,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:01,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:04,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:04,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-13 06:21:04,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:21:04,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 06:21:04,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:04,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:04,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:21:04,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 06:21:04,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:05,243 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:05,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:05,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:05,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:05,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:05,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:05,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:21:05,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:05,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:05,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:05,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:05,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:05,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:05,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:05,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:05,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:21:05,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:05,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 06:21:05,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:05,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:21:05,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:05,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:21:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:05,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:05,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:05,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 06:21:05,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-13 06:21:05,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 06:21:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:05,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 06:21:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:05,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:05,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:05,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:21:05,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:05,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:21:05,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:05,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:05,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 06:21:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:05,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:05,829 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 208 proven. 33 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 06:21:05,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620610568] [2020-10-13 06:21:05,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:05,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:05,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483842600] [2020-10-13 06:21:05,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:05,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:05,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:05,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:05,831 INFO L87 Difference]: Start difference. First operand 53152 states and 61213 transitions. Second operand 7 states. [2020-10-13 06:21:05,993 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:21:09,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:09,294 INFO L93 Difference]: Finished difference Result 114626 states and 132867 transitions. [2020-10-13 06:21:09,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:21:09,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-13 06:21:09,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:09,418 INFO L225 Difference]: With dead ends: 114626 [2020-10-13 06:21:09,419 INFO L226 Difference]: Without dead ends: 62439 [2020-10-13 06:21:09,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:21:09,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62439 states. [2020-10-13 06:21:10,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62439 to 61172. [2020-10-13 06:21:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61172 states. [2020-10-13 06:21:10,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61172 states to 61172 states and 71091 transitions. [2020-10-13 06:21:10,343 INFO L78 Accepts]: Start accepts. Automaton has 61172 states and 71091 transitions. Word has length 354 [2020-10-13 06:21:10,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:10,344 INFO L479 AbstractCegarLoop]: Abstraction has 61172 states and 71091 transitions. [2020-10-13 06:21:10,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:21:10,344 INFO L276 IsEmpty]: Start isEmpty. Operand 61172 states and 71091 transitions. [2020-10-13 06:21:10,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-13 06:21:10,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:10,395 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:10,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:21:10,395 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:10,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:10,396 INFO L82 PathProgramCache]: Analyzing trace with hash 875854639, now seen corresponding path program 1 times [2020-10-13 06:21:10,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:10,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180443721] [2020-10-13 06:21:10,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:10,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:10,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:11,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:14,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:16,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:16,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-13 06:21:16,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:21:16,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6281 [2020-10-13 06:21:16,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 06:21:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:21:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 06:21:16,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:16,945 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:16,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:16,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:16,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:16,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:16,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:16,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:21:16,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:16,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:17,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:17,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:17,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:17,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:21:17,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:17,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 06:21:17,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:21:17,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:17,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:21:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:17,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:17,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:17,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:21:17,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:17,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 06:21:17,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:17,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:21:17,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:17,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:21:17,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:17,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-13 06:21:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:17,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:17,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:17,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:21:17,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:17,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 06:21:17,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:21:17,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 300 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 06:21:17,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180443721] [2020-10-13 06:21:17,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:17,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 06:21:17,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129084450] [2020-10-13 06:21:17,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 06:21:17,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:17,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 06:21:17,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:21:17,564 INFO L87 Difference]: Start difference. First operand 61172 states and 71091 transitions. Second operand 10 states. [2020-10-13 06:21:17,836 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 130 [2020-10-13 06:21:18,448 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:21:19,529 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2020-10-13 06:21:21,696 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:21:23,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:23,366 INFO L93 Difference]: Finished difference Result 161211 states and 192491 transitions. [2020-10-13 06:21:23,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 06:21:23,367 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 365 [2020-10-13 06:21:23,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:23,738 INFO L225 Difference]: With dead ends: 161211 [2020-10-13 06:21:23,738 INFO L226 Difference]: Without dead ends: 101437 [2020-10-13 06:21:23,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2020-10-13 06:21:23,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101437 states. [2020-10-13 06:21:25,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101437 to 99044. [2020-10-13 06:21:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99044 states. [2020-10-13 06:21:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99044 states to 99044 states and 115206 transitions. [2020-10-13 06:21:25,528 INFO L78 Accepts]: Start accepts. Automaton has 99044 states and 115206 transitions. Word has length 365 [2020-10-13 06:21:25,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:25,529 INFO L479 AbstractCegarLoop]: Abstraction has 99044 states and 115206 transitions. [2020-10-13 06:21:25,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 06:21:25,529 INFO L276 IsEmpty]: Start isEmpty. Operand 99044 states and 115206 transitions. [2020-10-13 06:21:25,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-10-13 06:21:25,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:25,637 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:21:25,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:21:25,637 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:25,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:25,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1000736114, now seen corresponding path program 1 times [2020-10-13 06:21:25,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:25,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411181079] [2020-10-13 06:21:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:25,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:25,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:27,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:28,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:30,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:30,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-13 06:21:30,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:21:30,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-13 06:21:30,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:30,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:30,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-13 06:21:30,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 06:21:30,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:30,978 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:30,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:30,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:30,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:30,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:30,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:30,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:21:30,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:30,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:30,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:30,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:30,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:31,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:31,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:31,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:31,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:21:31,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:31,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 06:21:31,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:31,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:31,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:31,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:31,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:31,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:21:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:31,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:31,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:31,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:21:31,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:31,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 06:21:31,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:31,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:31,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:31,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:21:31,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:31,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-13 06:21:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:31,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:31,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:31,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 06:21:31,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:31,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 06:21:31,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 06:21:31,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:31,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-13 06:21:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:31,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:31,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:31,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:21:31,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:31,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:21:31,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 06:21:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:31,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:31,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-13 06:21:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:31,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:31,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:31,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:21:31,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:31,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 06:21:31,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:31,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:31,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 06:21:31,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:31,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 373 proven. 71 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2020-10-13 06:21:31,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411181079] [2020-10-13 06:21:31,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:31,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:31,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270526102] [2020-10-13 06:21:31,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:31,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:31,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:31,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:31,863 INFO L87 Difference]: Start difference. First operand 99044 states and 115206 transitions. Second operand 7 states. [2020-10-13 06:21:32,011 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:21:34,266 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:21:36,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:36,377 INFO L93 Difference]: Finished difference Result 191403 states and 222765 transitions. [2020-10-13 06:21:36,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:21:36,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 466 [2020-10-13 06:21:36,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:36,679 INFO L225 Difference]: With dead ends: 191403 [2020-10-13 06:21:36,680 INFO L226 Difference]: Without dead ends: 94780 [2020-10-13 06:21:36,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:21:36,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94780 states. [2020-10-13 06:21:38,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94780 to 93124. [2020-10-13 06:21:38,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93124 states. [2020-10-13 06:21:38,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93124 states to 93124 states and 105858 transitions. [2020-10-13 06:21:38,189 INFO L78 Accepts]: Start accepts. Automaton has 93124 states and 105858 transitions. Word has length 466 [2020-10-13 06:21:38,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:38,190 INFO L479 AbstractCegarLoop]: Abstraction has 93124 states and 105858 transitions. [2020-10-13 06:21:38,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:21:38,190 INFO L276 IsEmpty]: Start isEmpty. Operand 93124 states and 105858 transitions. [2020-10-13 06:21:38,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2020-10-13 06:21:38,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:38,343 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:21:38,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:21:38,343 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:38,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:38,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1866414835, now seen corresponding path program 1 times [2020-10-13 06:21:38,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:38,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803180344] [2020-10-13 06:21:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:38,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:38,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:39,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:40,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:40,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:43,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:43,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 531 [2020-10-13 06:21:43,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:21:43,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-13 06:21:43,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:43,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:43,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:21:43,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:21:43,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:43,710 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:43,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:43,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:43,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:43,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:43,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:43,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:21:43,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:43,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:45,412 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:21:45,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:45,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:45,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:21:45,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:45,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-13 06:21:45,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:21:45,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:45,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:21:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:45,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:45,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:45,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:21:45,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:45,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 06:21:45,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:45,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:45,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:45,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:21:45,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:45,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 06:21:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:45,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:45,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:45,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:21:45,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:45,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:21:45,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:45,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 06:21:45,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:45,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:45,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-13 06:21:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:46,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:46,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:46,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 06:21:46,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:46,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-13 06:21:46,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:46,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 06:21:46,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:46,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:46,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-13 06:21:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:46,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:46,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:46,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:21:46,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:46,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 06:21:46,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:46,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:46,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 06:21:46,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:46,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:46,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-13 06:21:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:46,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:46,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:46,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:21:46,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:46,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:21:46,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:46,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:46,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 06:21:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:46,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 348 proven. 58 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2020-10-13 06:21:46,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803180344] [2020-10-13 06:21:46,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:46,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:46,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291871173] [2020-10-13 06:21:46,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:46,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:46,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:46,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:46,782 INFO L87 Difference]: Start difference. First operand 93124 states and 105858 transitions. Second operand 7 states. [2020-10-13 06:21:46,922 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:21:48,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:48,883 INFO L93 Difference]: Finished difference Result 156403 states and 177402 transitions. [2020-10-13 06:21:48,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 06:21:48,884 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 511 [2020-10-13 06:21:48,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:49,027 INFO L225 Difference]: With dead ends: 156403 [2020-10-13 06:21:49,027 INFO L226 Difference]: Without dead ends: 72580 [2020-10-13 06:21:49,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 06:21:49,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72580 states. [2020-10-13 06:21:49,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72580 to 71861. [2020-10-13 06:21:49,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71861 states. [2020-10-13 06:21:50,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71861 states to 71861 states and 80513 transitions. [2020-10-13 06:21:50,486 INFO L78 Accepts]: Start accepts. Automaton has 71861 states and 80513 transitions. Word has length 511 [2020-10-13 06:21:50,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:50,486 INFO L479 AbstractCegarLoop]: Abstraction has 71861 states and 80513 transitions. [2020-10-13 06:21:50,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:21:50,486 INFO L276 IsEmpty]: Start isEmpty. Operand 71861 states and 80513 transitions. [2020-10-13 06:21:50,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2020-10-13 06:21:50,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:50,554 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:50,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:21:50,554 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:50,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:50,554 INFO L82 PathProgramCache]: Analyzing trace with hash -415316524, now seen corresponding path program 1 times [2020-10-13 06:21:50,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:50,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138784651] [2020-10-13 06:21:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:50,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:50,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:51,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:51,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:52,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:55,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:55,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 641 [2020-10-13 06:21:55,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:21:55,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 06:21:55,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 336 [2020-10-13 06:21:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:21:55,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:55,862 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:55,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:55,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:55,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:55,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:55,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:55,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:21:55,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:55,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:55,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:55,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:55,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:55,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:55,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:55,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:21:55,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:55,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 06:21:55,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:55,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:55,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:56,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:21:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:56,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:56,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:56,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 06:21:56,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:56,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:21:56,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:56,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:56,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:56,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:56,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:56,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-13 06:21:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:56,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:56,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:56,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 06:21:56,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:56,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 06:21:56,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:56,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:56,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:56,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 06:21:56,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:56,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-10-13 06:21:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:56,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:56,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:56,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:21:56,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:56,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 06:21:56,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:56,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:56,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:56,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:21:56,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:56,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-10-13 06:21:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:56,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:56,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:56,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:21:56,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:56,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 06:21:56,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:56,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:56,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 06:21:56,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:56,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:56,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-10-13 06:21:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:56,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:56,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:56,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:21:56,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:56,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 06:21:56,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 06:21:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:56,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 557 proven. 64 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2020-10-13 06:21:57,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138784651] [2020-10-13 06:21:57,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:57,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:57,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665829025] [2020-10-13 06:21:57,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:57,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:57,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:57,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:57,243 INFO L87 Difference]: Start difference. First operand 71861 states and 80513 transitions. Second operand 7 states. [2020-10-13 06:21:57,380 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-13 06:21:58,740 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:22:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:00,268 INFO L93 Difference]: Finished difference Result 125345 states and 139893 transitions. [2020-10-13 06:22:00,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:22:00,269 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 621 [2020-10-13 06:22:00,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:00,270 INFO L225 Difference]: With dead ends: 125345 [2020-10-13 06:22:00,270 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 06:22:00,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:22:00,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 06:22:00,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 06:22:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 06:22:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 06:22:00,382 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 621 [2020-10-13 06:22:00,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:00,383 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 06:22:00,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:22:00,383 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 06:22:00,383 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 06:22:00,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 06:22:00,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.