/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/array-crafted/mapavg2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 04:30:08,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 04:30:08,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 04:30:08,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 04:30:08,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 04:30:08,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 04:30:08,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 04:30:08,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 04:30:08,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 04:30:08,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 04:30:08,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 04:30:08,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 04:30:08,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 04:30:08,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 04:30:08,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 04:30:08,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 04:30:08,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 04:30:08,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 04:30:08,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 04:30:08,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 04:30:08,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 04:30:08,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 04:30:08,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 04:30:08,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 04:30:08,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 04:30:08,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 04:30:08,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 04:30:08,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 04:30:08,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 04:30:08,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 04:30:08,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 04:30:08,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 04:30:08,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 04:30:08,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 04:30:08,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 04:30:08,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 04:30:08,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 04:30:08,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 04:30:08,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 04:30:08,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 04:30:08,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 04:30:08,319 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 04:30:08,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 04:30:08,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 04:30:08,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 04:30:08,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 04:30:08,368 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 04:30:08,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 04:30:08,369 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 04:30:08,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 04:30:08,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 04:30:08,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 04:30:08,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 04:30:08,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 04:30:08,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 04:30:08,370 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 04:30:08,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 04:30:08,371 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 04:30:08,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 04:30:08,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 04:30:08,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 04:30:08,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 04:30:08,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 04:30:08,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 04:30:08,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 04:30:08,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 04:30:08,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 04:30:08,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 04:30:08,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 04:30:08,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 04:30:08,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 04:30:08,375 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 04:30:08,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 04:30:08,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 04:30:08,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 04:30:08,688 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 04:30:08,688 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 04:30:08,689 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg2.i [2020-10-13 04:30:08,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6a3b9a81/906c97bcf20a4d22a27f394336dc0934/FLAGbe3e841e5 [2020-10-13 04:30:09,260 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 04:30:09,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapavg2.i [2020-10-13 04:30:09,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6a3b9a81/906c97bcf20a4d22a27f394336dc0934/FLAGbe3e841e5 [2020-10-13 04:30:09,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6a3b9a81/906c97bcf20a4d22a27f394336dc0934 [2020-10-13 04:30:09,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 04:30:09,686 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 04:30:09,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 04:30:09,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 04:30:09,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 04:30:09,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:09" (1/1) ... [2020-10-13 04:30:09,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92e95d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:09, skipping insertion in model container [2020-10-13 04:30:09,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:09" (1/1) ... [2020-10-13 04:30:09,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 04:30:09,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 04:30:09,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:30:09,967 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 04:30:09,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:30:10,011 INFO L208 MainTranslator]: Completed translation [2020-10-13 04:30:10,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:10 WrapperNode [2020-10-13 04:30:10,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 04:30:10,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 04:30:10,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 04:30:10,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 04:30:10,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:10" (1/1) ... [2020-10-13 04:30:10,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:10" (1/1) ... [2020-10-13 04:30:10,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:10" (1/1) ... [2020-10-13 04:30:10,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:10" (1/1) ... [2020-10-13 04:30:10,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:10" (1/1) ... [2020-10-13 04:30:10,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:10" (1/1) ... [2020-10-13 04:30:10,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:10" (1/1) ... [2020-10-13 04:30:10,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 04:30:10,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 04:30:10,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 04:30:10,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 04:30:10,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:10" (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 04:30:10,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 04:30:10,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 04:30:10,264 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2020-10-13 04:30:10,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 04:30:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 04:30:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 04:30:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2020-10-13 04:30:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 04:30:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 04:30:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 04:30:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 04:30:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 04:30:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 04:30:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 04:30:10,617 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 04:30:10,618 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 04:30:10,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:10 BoogieIcfgContainer [2020-10-13 04:30:10,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 04:30:10,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 04:30:10,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 04:30:10,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 04:30:10,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:30:09" (1/3) ... [2020-10-13 04:30:10,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c2daf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:10, skipping insertion in model container [2020-10-13 04:30:10,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:10" (2/3) ... [2020-10-13 04:30:10,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c2daf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:10, skipping insertion in model container [2020-10-13 04:30:10,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:10" (3/3) ... [2020-10-13 04:30:10,631 INFO L109 eAbstractionObserver]: Analyzing ICFG mapavg2.i [2020-10-13 04:30:10,642 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 04:30:10,649 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 04:30:10,662 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 04:30:10,682 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 04:30:10,683 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 04:30:10,683 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 04:30:10,683 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 04:30:10,683 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 04:30:10,683 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 04:30:10,684 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 04:30:10,684 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 04:30:10,701 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-13 04:30:10,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 04:30:10,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:10,708 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:10,709 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:10,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:10,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1234592251, now seen corresponding path program 1 times [2020-10-13 04:30:10,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:10,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58880842] [2020-10-13 04:30:10,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:10,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:11,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:11,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:11,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:12,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:12,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 04:30:12,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 04:30:12,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1812 [2020-10-13 04:30:12,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 04:30:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:12,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 04:30:12,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:12,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:12,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:12,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:12,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:12,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:30:12,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:12,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:12,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:12,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:12,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:12,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:12,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:12,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:12,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:12,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:30:12,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:12,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:12,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:12,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:12,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:12,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 04:30:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:12,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:12,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:12,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:12,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:12,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:12,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:30:12,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:12,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:12,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:30:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:12,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:12,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:12,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:12,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:12,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:12,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:30:12,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:12,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:12,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:12,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:12,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:12,876 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 04:30:12,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58880842] [2020-10-13 04:30:12,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:12,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 04:30:12,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554833630] [2020-10-13 04:30:12,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 04:30:12,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:12,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 04:30:12,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:30:12,908 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-13 04:30:13,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:13,033 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-13 04:30:13,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 04:30:13,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 04:30:13,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:13,046 INFO L225 Difference]: With dead ends: 54 [2020-10-13 04:30:13,046 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 04:30:13,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:30:13,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 04:30:13,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-13 04:30:13,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 04:30:13,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 04:30:13,099 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-13 04:30:13,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:13,099 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 04:30:13,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 04:30:13,100 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 04:30:13,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 04:30:13,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:13,103 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:13,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 04:30:13,103 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:13,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:13,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1054720325, now seen corresponding path program 1 times [2020-10-13 04:30:13,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:13,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012418911] [2020-10-13 04:30:13,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:13,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:13,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:13,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:13,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:13,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:13,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:14,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 04:30:14,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 04:30:14,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1651 [2020-10-13 04:30:14,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:14,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:14,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:30:14,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:14,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:14,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:14,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:14,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:14,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:14,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:14,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:14,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:14,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:14,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:14,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:14,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:14,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:14,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:14,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:14,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:30:14,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:14,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:14,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:14,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:14,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:14,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 04:30:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:14,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:14,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:14,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:14,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:30:14,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:14,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:14,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:14,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:14,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:14,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:30:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:14,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:14,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:14,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:14,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:30:14,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:14,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 04:30:14,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012418911] [2020-10-13 04:30:14,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:14,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 04:30:14,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290290311] [2020-10-13 04:30:14,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:30:14,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:14,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:30:14,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:14,879 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-13 04:30:14,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:14,970 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-13 04:30:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:30:14,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 04:30:14,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:14,973 INFO L225 Difference]: With dead ends: 45 [2020-10-13 04:30:14,973 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 04:30:14,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:14,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 04:30:14,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 04:30:14,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 04:30:14,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 04:30:14,983 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 04:30:14,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:14,983 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 04:30:14,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:30:14,984 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 04:30:14,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 04:30:14,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:14,985 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:14,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 04:30:14,986 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:14,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:14,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1088319463, now seen corresponding path program 1 times [2020-10-13 04:30:14,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:14,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583019964] [2020-10-13 04:30:14,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:14,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:15,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:15,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:15,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:15,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:18,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:18,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 04:30:18,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:18,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3752 [2020-10-13 04:30:18,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:18,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:18,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 04:30:18,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:18,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:18,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:18,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:18,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:18,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:18,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:18,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:18,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:18,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:18,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:18,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:18,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:18,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:18,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:18,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:18,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:30:18,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:18,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:18,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:18,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:18,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:18,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 04:30:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:18,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:18,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:18,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:18,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:18,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:18,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:30:18,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:18,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:18,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:30:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:18,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:18,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:18,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:18,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:18,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:18,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:30:18,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:18,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:18,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 04:30:18,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583019964] [2020-10-13 04:30:18,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:18,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:30:18,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839596578] [2020-10-13 04:30:18,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:30:18,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:18,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:30:18,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:18,900 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 04:30:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:18,978 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-13 04:30:18,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:30:18,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 04:30:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:18,980 INFO L225 Difference]: With dead ends: 42 [2020-10-13 04:30:18,980 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 04:30:18,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:18,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 04:30:18,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 04:30:18,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 04:30:18,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 04:30:18,988 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-13 04:30:18,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:18,990 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 04:30:18,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:30:18,990 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 04:30:18,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 04:30:18,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:18,992 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 04:30:18,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 04:30:18,993 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:18,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:18,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1220480489, now seen corresponding path program 1 times [2020-10-13 04:30:18,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:18,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979511928] [2020-10-13 04:30:18,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:19,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 04:30:24,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:24,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 04:30:24,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:24,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:24,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:24,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:24,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:24,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:24,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:24,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:24,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:24,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:24,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:24,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:24,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:24,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 04:30:24,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:24,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:24,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:24,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 04:30:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:24,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:24,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:30:24,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:24,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:24,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:30:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:24,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:24,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:30:24,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:24,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 04:30:24,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979511928] [2020-10-13 04:30:24,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:24,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:30:24,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203096546] [2020-10-13 04:30:24,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:30:24,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:24,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:30:24,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:24,186 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-13 04:30:24,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:24,288 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-13 04:30:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:30:24,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 04:30:24,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:24,289 INFO L225 Difference]: With dead ends: 50 [2020-10-13 04:30:24,290 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 04:30:24,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:24,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 04:30:24,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 04:30:24,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 04:30:24,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 04:30:24,301 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-13 04:30:24,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:24,302 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 04:30:24,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:30:24,303 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 04:30:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 04:30:24,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:24,304 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 04:30:24,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 04:30:24,304 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:24,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:24,305 INFO L82 PathProgramCache]: Analyzing trace with hash -490156423, now seen corresponding path program 1 times [2020-10-13 04:30:24,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:24,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292535406] [2020-10-13 04:30:24,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 04:30:29,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:29,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 04:30:29,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:29,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 04:30:29,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:29,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:29,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:29,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:29,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:29,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:29,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:29,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:30:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:29,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:29,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 04:30:29,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:29,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:29,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:29,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 04:30:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:29,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:29,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:30:29,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:29,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:29,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:30:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:29,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:29,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:30:29,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:29,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:29,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:29,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 04:30:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 04:30:29,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292535406] [2020-10-13 04:30:29,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:29,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:30:29,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001605513] [2020-10-13 04:30:29,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:30:29,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:29,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:30:29,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:29,565 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 04:30:29,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:29,718 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-13 04:30:29,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:30:29,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-13 04:30:29,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:29,721 INFO L225 Difference]: With dead ends: 45 [2020-10-13 04:30:29,721 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 04:30:29,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:29,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 04:30:29,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 04:30:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 04:30:29,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 04:30:29,738 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-13 04:30:29,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:29,741 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 04:30:29,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:30:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 04:30:29,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 04:30:29,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:29,743 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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 04:30:29,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 04:30:29,744 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:29,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:29,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1911416713, now seen corresponding path program 2 times [2020-10-13 04:30:29,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:29,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341360356] [2020-10-13 04:30:29,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:30,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:34,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 04:30:34,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:34,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:30:34,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:34,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:34,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:30:34,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:34,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:34,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:34,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:34,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:34,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:34,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:34,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:34,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:34,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:34,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:34,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:34,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:30:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:34,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:34,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:34,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:34,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:30:34,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:34,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:34,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:34,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:34,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:34,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 04:30:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:34,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:34,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:34,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:34,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:30:34,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:34,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:34,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:34,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:34,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:30:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:34,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:34,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:34,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:34,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:30:34,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:34,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:34,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 04:30:34,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341360356] [2020-10-13 04:30:34,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:34,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:30:34,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384895588] [2020-10-13 04:30:34,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:30:34,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:34,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:30:34,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:34,887 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-13 04:30:35,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:35,012 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-13 04:30:35,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:30:35,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-13 04:30:35,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:35,013 INFO L225 Difference]: With dead ends: 55 [2020-10-13 04:30:35,013 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 04:30:35,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:30:35,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 04:30:35,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 04:30:35,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 04:30:35,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 04:30:35,021 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 44 [2020-10-13 04:30:35,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:35,021 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 04:30:35,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:30:35,022 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 04:30:35,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 04:30:35,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:35,023 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 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 04:30:35,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 04:30:35,023 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:35,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:35,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1583158571, now seen corresponding path program 3 times [2020-10-13 04:30:35,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:35,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609354843] [2020-10-13 04:30:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:35,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:40,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 04:30:40,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:40,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:30:40,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:40,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:40,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:40,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:40,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:40,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:40,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:40,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:40,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:40,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:40,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:40,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:40,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:30:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:40,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:40,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:40,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:40,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:30:40,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:40,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:40,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:40,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:40,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:40,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:30:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:40,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:40,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:40,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:40,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:30:40,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:40,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:40,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:40,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:40,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:40,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:30:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:40,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:40,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:40,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:30:40,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:40,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:40,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:40,184 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 04:30:40,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609354843] [2020-10-13 04:30:40,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:40,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:30:40,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777626228] [2020-10-13 04:30:40,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:30:40,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:40,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:30:40,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:40,189 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 04:30:40,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:40,302 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-13 04:30:40,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:30:40,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-13 04:30:40,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:40,303 INFO L225 Difference]: With dead ends: 60 [2020-10-13 04:30:40,303 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 04:30:40,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:40,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 04:30:40,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 04:30:40,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 04:30:40,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 04:30:40,310 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2020-10-13 04:30:40,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:40,310 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 04:30:40,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:30:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 04:30:40,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 04:30:40,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:40,312 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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] [2020-10-13 04:30:40,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 04:30:40,312 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:40,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:40,313 INFO L82 PathProgramCache]: Analyzing trace with hash -644598601, now seen corresponding path program 4 times [2020-10-13 04:30:40,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:40,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583912064] [2020-10-13 04:30:40,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:40,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:41,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 04:30:45,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:45,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 04:30:45,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:45,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:30:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:45,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:45,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:45,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:45,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:45,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:45,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:45,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:30:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:45,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:45,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:30:45,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:45,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:45,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:45,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 04:30:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:45,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:45,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:30:45,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:45,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:45,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:45,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:45,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:30:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:45,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:45,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:30:45,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:45,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:45,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:45,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:45,485 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-13 04:30:45,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583912064] [2020-10-13 04:30:45,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:45,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:30:45,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701759556] [2020-10-13 04:30:45,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:30:45,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:45,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:30:45,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:45,490 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-13 04:30:45,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:45,622 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-13 04:30:45,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:30:45,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 04:30:45,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:45,624 INFO L225 Difference]: With dead ends: 61 [2020-10-13 04:30:45,624 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 04:30:45,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:30:45,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 04:30:45,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 04:30:45,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 04:30:45,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 04:30:45,638 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-13 04:30:45,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:45,638 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 04:30:45,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:30:45,639 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 04:30:45,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 04:30:45,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:45,642 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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] [2020-10-13 04:30:45,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 04:30:45,642 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:45,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:45,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1126995733, now seen corresponding path program 5 times [2020-10-13 04:30:45,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:45,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569104673] [2020-10-13 04:30:45,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:49,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:50,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 04:30:50,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:50,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:30:50,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:50,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:50,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:50,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:50,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:50,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:50,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:50,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:50,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:50,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:30:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:50,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:50,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:50,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:30:50,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:50,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:50,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 04:30:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:50,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:50,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:50,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:50,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:30:50,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:50,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:50,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:50,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:50,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:50,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 04:30:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:50,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:50,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:50,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:50,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:30:50,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:50,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-13 04:30:50,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569104673] [2020-10-13 04:30:50,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:50,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:30:50,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493753169] [2020-10-13 04:30:50,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:30:50,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:50,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:30:50,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:50,820 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-13 04:30:50,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:50,903 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-10-13 04:30:50,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:30:50,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-13 04:30:50,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:50,904 INFO L225 Difference]: With dead ends: 66 [2020-10-13 04:30:50,905 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 04:30:50,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:50,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 04:30:50,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 04:30:50,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 04:30:50,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 04:30:50,911 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-13 04:30:50,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:50,911 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 04:30:50,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:30:50,911 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 04:30:50,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 04:30:50,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:50,912 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:50,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 04:30:50,913 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:50,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:50,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1647238903, now seen corresponding path program 6 times [2020-10-13 04:30:50,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:50,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778460850] [2020-10-13 04:30:50,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:50,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:55,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 04:30:55,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:30:55,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:30:55,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:55,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:55,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 04:30:55,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:55,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:55,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:55,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:55,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:55,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:55,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:55,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:55,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:55,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:30:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:55,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:55,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:55,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:55,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:30:55,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:55,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:55,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:55,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:55,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:55,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 04:30:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:55,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:56,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:56,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:56,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:30:56,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:56,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:56,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:56,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:56,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:56,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 04:30:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:56,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:56,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:56,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:56,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:30:56,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:56,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:56,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:56,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:56,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 04:30:56,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778460850] [2020-10-13 04:30:56,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:56,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:30:56,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972569070] [2020-10-13 04:30:56,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:30:56,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:56,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:30:56,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:56,058 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2020-10-13 04:30:56,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:56,159 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-10-13 04:30:56,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:30:56,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-13 04:30:56,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:56,160 INFO L225 Difference]: With dead ends: 59 [2020-10-13 04:30:56,161 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 04:30:56,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:56,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 04:30:56,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 04:30:56,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 04:30:56,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 04:30:56,167 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-13 04:30:56,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:56,167 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 04:30:56,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:30:56,168 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 04:30:56,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 04:30:56,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:56,169 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:56,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 04:30:56,169 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:56,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:56,169 INFO L82 PathProgramCache]: Analyzing trace with hash -546516619, now seen corresponding path program 7 times [2020-10-13 04:30:56,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:56,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027019455] [2020-10-13 04:30:56,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:56,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:01,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 04:31:01,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:01,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 04:31:01,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:01,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:31:01,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:31:01,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:31:01,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:01,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:01,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:01,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:01,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:01,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:01,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:01,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:01,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:31:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:01,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:01,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:31:01,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:01,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:31:01,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:31:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:01,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:01,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 04:31:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:01,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:01,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:31:01,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:01,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:31:01,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:01,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:01,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:31:01,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:01,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:01,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:31:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:01,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:01,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:31:01,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:31:01,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:31:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:01,342 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 04:31:01,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027019455] [2020-10-13 04:31:01,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:01,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:31:01,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972747842] [2020-10-13 04:31:01,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:31:01,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:01,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:31:01,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:31:01,344 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 04:31:01,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:01,439 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2020-10-13 04:31:01,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:31:01,439 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-13 04:31:01,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:01,440 INFO L225 Difference]: With dead ends: 72 [2020-10-13 04:31:01,441 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 04:31:01,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:31:01,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 04:31:01,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 04:31:01,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 04:31:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 04:31:01,447 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-13 04:31:01,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:01,448 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 04:31:01,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:31:01,448 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 04:31:01,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 04:31:01,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:01,449 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:01,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 04:31:01,449 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:01,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:01,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1570482089, now seen corresponding path program 8 times [2020-10-13 04:31:01,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:01,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107683574] [2020-10-13 04:31:01,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:01,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 04:31:06,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:06,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 04:31:06,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:31:06,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 04:31:06,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:31:06,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:06,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:06,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:06,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:06,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:06,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:31:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:31:06,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:06,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:31:06,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:31:06,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:06,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:31:06,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 04:31:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:31:06,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:06,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:31:06,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:06,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:31:06,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:06,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 04:31:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:31:06,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:06,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:31:06,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:31:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:06,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,670 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-13 04:31:06,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107683574] [2020-10-13 04:31:06,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:06,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:31:06,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733815615] [2020-10-13 04:31:06,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:31:06,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:06,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:31:06,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:31:06,672 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 7 states. [2020-10-13 04:31:06,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:06,799 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-10-13 04:31:06,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:31:06,799 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 04:31:06,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:06,800 INFO L225 Difference]: With dead ends: 73 [2020-10-13 04:31:06,800 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 04:31:06,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:31:06,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 04:31:06,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 04:31:06,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 04:31:06,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 04:31:06,816 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 64 [2020-10-13 04:31:06,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:06,817 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 04:31:06,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:31:06,817 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 04:31:06,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 04:31:06,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:06,818 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:06,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 04:31:06,818 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:06,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:06,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1638506059, now seen corresponding path program 9 times [2020-10-13 04:31:06,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:06,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093053764] [2020-10-13 04:31:06,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:11,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 04:31:11,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:31:11,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:31:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 04:31:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:31:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:11,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:11,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:11,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:11,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:11,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:11,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:11,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:11,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:11,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:31:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:11,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:11,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:11,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:11,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 04:31:11,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:11,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:31:11,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:31:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:11,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:11,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:11,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:11,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:31:11,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:11,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:11,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:11,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:11,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:12,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 04:31:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:12,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:12,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:12,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:12,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:31:12,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:31:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:12,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:12,052 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-13 04:31:12,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093053764] [2020-10-13 04:31:12,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:12,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:31:12,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598936649] [2020-10-13 04:31:12,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:31:12,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:12,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:31:12,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:31:12,055 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-13 04:31:12,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:12,163 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-10-13 04:31:12,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:31:12,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-13 04:31:12,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:12,164 INFO L225 Difference]: With dead ends: 67 [2020-10-13 04:31:12,165 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 04:31:12,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:31:12,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 04:31:12,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 04:31:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 04:31:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 04:31:12,171 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-13 04:31:12,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:12,171 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 04:31:12,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:31:12,172 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 04:31:12,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 04:31:12,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:12,173 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:12,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 04:31:12,173 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:12,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:12,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1859976013, now seen corresponding path program 10 times [2020-10-13 04:31:12,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:12,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307449577] [2020-10-13 04:31:12,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:12,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:17,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 04:31:17,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:17,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:31:17,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 04:31:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:17,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:17,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:17,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:17,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:17,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:17,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:31:17,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:17,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:17,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:17,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:17,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:17,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:31:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:17,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:17,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:17,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:17,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:31:17,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:17,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:17,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:17,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:17,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:17,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:31:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:17,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:17,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:17,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:17,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 04:31:17,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:17,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:17,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:31:17,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:17,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:17,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 04:31:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:17,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:17,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:17,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:17,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:31:17,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:31:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:17,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-13 04:31:17,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307449577] [2020-10-13 04:31:17,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:17,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:31:17,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853915880] [2020-10-13 04:31:17,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:31:17,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:17,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:31:17,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:17,350 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-13 04:31:17,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:17,494 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-13 04:31:17,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:31:17,494 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-13 04:31:17,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:17,495 INFO L225 Difference]: With dead ends: 81 [2020-10-13 04:31:17,495 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 04:31:17,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:31:17,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 04:31:17,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 04:31:17,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 04:31:17,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 04:31:17,503 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 72 [2020-10-13 04:31:17,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:17,504 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 04:31:17,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:31:17,504 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 04:31:17,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 04:31:17,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:17,505 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:17,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 04:31:17,505 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:17,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:17,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1727526929, now seen corresponding path program 11 times [2020-10-13 04:31:17,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:17,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570843485] [2020-10-13 04:31:17,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:17,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 04:31:22,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:22,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:31:22,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:31:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:22,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:22,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:22,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:22,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:22,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:22,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:31:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:22,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:31:22,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:22,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 04:31:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:22,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:22,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:31:22,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:22,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:22,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:22,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:22,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:31:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:22,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:22,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 04:31:22,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:22,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:22,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:22,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 04:31:22,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570843485] [2020-10-13 04:31:22,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:22,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:31:22,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663272517] [2020-10-13 04:31:22,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:31:22,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:22,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:31:22,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:22,678 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-13 04:31:22,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:22,823 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-10-13 04:31:22,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:31:22,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-13 04:31:22,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:22,825 INFO L225 Difference]: With dead ends: 86 [2020-10-13 04:31:22,825 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 04:31:22,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:22,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 04:31:22,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 04:31:22,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 04:31:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 04:31:22,845 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 78 [2020-10-13 04:31:22,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:22,846 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 04:31:22,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:31:22,846 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 04:31:22,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 04:31:22,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:22,850 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:22,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 04:31:22,850 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:22,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:22,851 INFO L82 PathProgramCache]: Analyzing trace with hash 2082044659, now seen corresponding path program 12 times [2020-10-13 04:31:22,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:22,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971081614] [2020-10-13 04:31:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 04:31:27,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:27,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:31:27,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 04:31:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:27,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:27,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:27,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:27,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:27,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:27,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:27,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:27,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:27,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:27,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:31:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:27,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:27,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:27,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 04:31:27,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:27,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:27,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 04:31:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:27,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:28,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:28,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:28,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 04:31:28,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:28,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:28,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:28,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:28,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:28,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 04:31:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:28,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:28,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:28,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:28,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 04:31:28,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:28,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:28,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:28,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:28,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-13 04:31:28,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971081614] [2020-10-13 04:31:28,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:28,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:31:28,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068223088] [2020-10-13 04:31:28,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:31:28,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:28,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:31:28,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:28,109 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 8 states. [2020-10-13 04:31:28,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:28,217 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-13 04:31:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:31:28,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-13 04:31:28,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:28,219 INFO L225 Difference]: With dead ends: 75 [2020-10-13 04:31:28,219 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 04:31:28,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:28,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 04:31:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 04:31:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 04:31:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 04:31:28,229 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-13 04:31:28,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:28,231 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 04:31:28,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:31:28,231 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 04:31:28,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 04:31:28,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:28,232 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:28,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 04:31:28,233 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:28,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:28,233 INFO L82 PathProgramCache]: Analyzing trace with hash 611266161, now seen corresponding path program 13 times [2020-10-13 04:31:28,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:28,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703201265] [2020-10-13 04:31:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:28,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:33,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 04:31:33,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:33,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:31:33,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:33,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:33,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 04:31:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:33,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:33,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:33,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:33,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:33,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:33,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:33,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:33,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:33,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:33,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:33,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:31:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:33,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:33,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:33,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:33,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:31:33,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:33,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:33,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:33,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:33,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 04:31:33,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 04:31:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:33,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:33,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:33,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:33,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:31:33,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:33,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:33,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:33,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:33,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:33,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 04:31:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:33,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:33,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:33,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:33,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:31:33,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:33,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:33,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-13 04:31:33,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703201265] [2020-10-13 04:31:33,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:33,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:31:33,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455720588] [2020-10-13 04:31:33,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:31:33,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:33,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:31:33,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:33,410 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 9 states. [2020-10-13 04:31:33,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:33,599 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-10-13 04:31:33,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:31:33,599 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-13 04:31:33,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:33,600 INFO L225 Difference]: With dead ends: 91 [2020-10-13 04:31:33,600 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 04:31:33,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:31:33,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 04:31:33,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 04:31:33,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 04:31:33,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-13 04:31:33,606 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 82 [2020-10-13 04:31:33,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:33,606 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-13 04:31:33,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:31:33,607 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-13 04:31:33,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 04:31:33,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:33,608 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:33,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 04:31:33,608 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:33,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:33,608 INFO L82 PathProgramCache]: Analyzing trace with hash -509363633, now seen corresponding path program 14 times [2020-10-13 04:31:33,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:33,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502426691] [2020-10-13 04:31:33,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:33,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 04:31:38,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:38,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 04:31:38,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-13 04:31:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:38,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:38,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:38,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:38,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:38,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:38,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:38,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:31:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:38,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:38,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:31:38,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:38,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:38,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:38,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 04:31:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:38,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:38,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:31:38,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:38,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:38,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:38,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 04:31:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:38,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:38,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:31:38,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:38,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:38,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:38,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,806 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2020-10-13 04:31:38,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502426691] [2020-10-13 04:31:38,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:38,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:31:38,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324151990] [2020-10-13 04:31:38,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:31:38,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:38,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:31:38,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:38,808 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-13 04:31:38,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:38,925 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2020-10-13 04:31:38,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:31:38,925 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-13 04:31:38,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:38,926 INFO L225 Difference]: With dead ends: 81 [2020-10-13 04:31:38,926 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 04:31:38,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:38,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 04:31:38,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 04:31:38,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 04:31:38,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-13 04:31:38,939 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 88 [2020-10-13 04:31:38,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:38,939 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-13 04:31:38,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:31:38,940 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-13 04:31:38,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 04:31:38,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:38,941 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:38,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 04:31:38,941 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:38,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:38,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1722323251, now seen corresponding path program 15 times [2020-10-13 04:31:38,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:38,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514159072] [2020-10-13 04:31:38,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:39,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:39,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:43,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 04:31:43,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:43,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 04:31:43,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:31:43,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:43,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:44,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:44,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:44,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:44,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:44,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:44,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:44,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:44,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:44,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:44,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:44,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:31:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:44,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:44,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:44,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:44,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:31:44,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:44,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:44,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:44,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:44,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:44,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 04:31:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:44,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:44,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:44,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:44,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:31:44,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:44,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:44,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:44,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:44,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 04:31:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:44,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:44,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:44,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:44,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:31:44,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:44,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:44,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:44,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:44,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 04:31:44,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514159072] [2020-10-13 04:31:44,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:44,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:31:44,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057421669] [2020-10-13 04:31:44,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:31:44,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:44,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:31:44,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:44,154 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 9 states. [2020-10-13 04:31:44,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:44,233 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2020-10-13 04:31:44,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:31:44,234 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 04:31:44,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:44,235 INFO L225 Difference]: With dead ends: 100 [2020-10-13 04:31:44,235 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 04:31:44,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:44,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 04:31:44,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 04:31:44,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 04:31:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 04:31:44,241 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 90 [2020-10-13 04:31:44,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:44,241 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 04:31:44,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:31:44,242 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 04:31:44,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 04:31:44,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:44,243 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:44,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 04:31:44,243 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:44,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:44,243 INFO L82 PathProgramCache]: Analyzing trace with hash 502378159, now seen corresponding path program 16 times [2020-10-13 04:31:44,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:44,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403588342] [2020-10-13 04:31:44,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:44,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:49,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 04:31:49,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:49,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:31:49,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:49,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:31:49,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 04:31:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:31:49,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:49,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:49,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:49,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:49,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:49,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:49,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:49,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:49,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:49,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:49,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:49,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:31:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:49,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:49,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:49,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:49,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:31:49,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:49,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:49,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:49,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 04:31:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:49,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:49,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:49,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:31:49,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:49,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 04:31:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:49,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:49,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:49,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:49,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 04:31:49,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:49,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:49,463 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 04:31:49,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403588342] [2020-10-13 04:31:49,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:49,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:31:49,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399221983] [2020-10-13 04:31:49,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:31:49,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:49,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:31:49,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:31:49,465 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 10 states. [2020-10-13 04:31:49,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:49,585 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2020-10-13 04:31:49,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:31:49,586 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-13 04:31:49,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:49,587 INFO L225 Difference]: With dead ends: 85 [2020-10-13 04:31:49,587 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 04:31:49,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:31:49,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 04:31:49,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 04:31:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 04:31:49,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-13 04:31:49,593 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 92 [2020-10-13 04:31:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:49,594 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-13 04:31:49,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:31:49,594 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-13 04:31:49,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 04:31:49,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:49,595 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 7, 7, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:49,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 04:31:49,595 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:49,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:49,596 INFO L82 PathProgramCache]: Analyzing trace with hash -101070035, now seen corresponding path program 17 times [2020-10-13 04:31:49,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:49,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219906258] [2020-10-13 04:31:49,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:49,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 04:31:54,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:31:54,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:31:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 04:31:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:31:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:54,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:54,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:54,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:54,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:54,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:31:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:54,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:54,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 04:31:54,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:54,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:54,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:54,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 04:31:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:54,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:54,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:31:54,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:31:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:31:54,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 04:31:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:54,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:54,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 04:31:54,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:54,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:54,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:54,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 88 proven. 124 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2020-10-13 04:31:54,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219906258] [2020-10-13 04:31:54,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:54,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:31:54,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647164753] [2020-10-13 04:31:54,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:31:54,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:54,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:31:54,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:31:54,834 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 10 states. [2020-10-13 04:31:55,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:55,046 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-10-13 04:31:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:31:55,046 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-13 04:31:55,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:55,047 INFO L225 Difference]: With dead ends: 105 [2020-10-13 04:31:55,047 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 04:31:55,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:31:55,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 04:31:55,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 04:31:55,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 04:31:55,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-13 04:31:55,053 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 94 [2020-10-13 04:31:55,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:55,053 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-13 04:31:55,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:31:55,053 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-13 04:31:55,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 04:31:55,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:55,055 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:55,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 04:31:55,055 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:55,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:55,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1053452277, now seen corresponding path program 18 times [2020-10-13 04:31:55,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:55,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678993488] [2020-10-13 04:31:55,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:55,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:55,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:55,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:55,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:00,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 04:32:00,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:00,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 04:32:00,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:32:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:32:00,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:00,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:00,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:00,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:00,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:00,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:00,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:00,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:00,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:32:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:00,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:00,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:32:00,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:00,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 04:32:00,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:32:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:00,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:00,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:32:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:00,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:00,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:32:00,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:00,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 04:32:00,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:32:00,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:00,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:00,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 04:32:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:00,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:00,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:32:00,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:00,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 04:32:00,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:00,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:00,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:32:00,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:00,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-13 04:32:00,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678993488] [2020-10-13 04:32:00,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:00,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:32:00,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238888496] [2020-10-13 04:32:00,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:32:00,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:00,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:32:00,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:32:00,326 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 10 states. [2020-10-13 04:32:00,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:00,449 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2020-10-13 04:32:00,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:32:00,450 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-10-13 04:32:00,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:00,451 INFO L225 Difference]: With dead ends: 110 [2020-10-13 04:32:00,451 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 04:32:00,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:32:00,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 04:32:00,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 04:32:00,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 04:32:00,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-13 04:32:00,465 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 100 [2020-10-13 04:32:00,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:00,466 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-13 04:32:00,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:32:00,466 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-13 04:32:00,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 04:32:00,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:00,468 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:00,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 04:32:00,468 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:00,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:00,469 INFO L82 PathProgramCache]: Analyzing trace with hash -2026707603, now seen corresponding path program 19 times [2020-10-13 04:32:00,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:00,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606575291] [2020-10-13 04:32:00,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:00,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:05,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 04:32:05,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:05,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:32:05,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:32:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 04:32:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:32:05,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:05,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:05,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:05,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:05,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:05,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:05,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:32:05,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:32:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:05,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:05,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:32:05,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:05,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 04:32:05,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:05,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:05,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:05,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:05,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:05,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 04:32:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:05,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:05,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:32:05,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:05,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:32:05,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:05,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:32:05,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:05,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:32:05,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:05,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 04:32:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:05,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:05,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:32:05,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:05,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 04:32:05,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:05,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:05,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:32:05,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:05,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:05,734 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 116 proven. 165 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-13 04:32:05,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606575291] [2020-10-13 04:32:05,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:05,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:32:05,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807592535] [2020-10-13 04:32:05,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:32:05,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:05,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:32:05,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:32:05,736 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 11 states. [2020-10-13 04:32:05,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:05,975 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2020-10-13 04:32:05,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:32:05,975 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-13 04:32:05,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:05,977 INFO L225 Difference]: With dead ends: 111 [2020-10-13 04:32:05,977 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 04:32:05,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:32:05,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 04:32:05,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 04:32:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 04:32:05,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-13 04:32:05,984 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 102 [2020-10-13 04:32:05,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:05,984 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-13 04:32:05,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:32:05,984 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-13 04:32:05,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 04:32:05,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:05,986 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:05,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 04:32:05,986 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:05,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:05,986 INFO L82 PathProgramCache]: Analyzing trace with hash 171000395, now seen corresponding path program 20 times [2020-10-13 04:32:05,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:05,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281512813] [2020-10-13 04:32:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:05,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:06,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:06,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:06,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:10,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 04:32:10,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:10,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:32:10,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:10,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:32:10,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-13 04:32:10,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:32:10,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:11,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:11,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:11,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:11,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:11,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:11,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:11,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:11,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:11,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:32:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:11,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:11,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:11,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:11,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 04:32:11,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:11,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:11,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:11,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:11,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:11,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 04:32:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:11,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:11,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:11,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:11,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 04:32:11,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:11,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:11,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:11,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:11,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:11,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 04:32:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:11,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:11,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:11,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:11,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 04:32:11,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:11,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2020-10-13 04:32:11,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281512813] [2020-10-13 04:32:11,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:11,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:32:11,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833231505] [2020-10-13 04:32:11,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:32:11,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:11,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:32:11,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:32:11,273 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 11 states. [2020-10-13 04:32:11,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:11,418 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-13 04:32:11,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:32:11,419 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-13 04:32:11,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:11,420 INFO L225 Difference]: With dead ends: 97 [2020-10-13 04:32:11,420 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 04:32:11,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:32:11,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 04:32:11,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 04:32:11,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 04:32:11,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-13 04:32:11,425 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-13 04:32:11,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:11,426 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-13 04:32:11,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:32:11,426 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-13 04:32:11,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 04:32:11,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:11,427 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:11,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 04:32:11,428 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:11,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:11,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1382697015, now seen corresponding path program 21 times [2020-10-13 04:32:11,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:11,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548625728] [2020-10-13 04:32:11,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:11,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:16,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 04:32:16,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:16,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 04:32:16,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:32:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:32:16,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:16,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:16,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:16,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:16,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:16,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:16,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:16,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:16,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:16,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:16,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:16,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:32:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:16,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:16,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:16,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:16,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 04:32:16,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:16,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:16,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 04:32:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:16,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:16,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:16,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:16,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 04:32:16,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:16,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:16,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:16,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:16,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:16,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 04:32:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:16,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:16,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:16,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:16,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 04:32:16,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:16,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:16,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:16,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:16,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 04:32:16,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548625728] [2020-10-13 04:32:16,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:16,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:32:16,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389960477] [2020-10-13 04:32:16,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:32:16,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:16,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:32:16,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:32:16,874 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 11 states. [2020-10-13 04:32:16,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:16,973 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2020-10-13 04:32:16,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:32:16,973 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-10-13 04:32:16,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:16,974 INFO L225 Difference]: With dead ends: 120 [2020-10-13 04:32:16,974 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 04:32:16,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:32:16,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 04:32:16,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 04:32:16,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 04:32:16,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 04:32:16,980 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 110 [2020-10-13 04:32:16,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:16,981 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 04:32:16,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:32:16,981 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 04:32:16,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 04:32:16,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:16,982 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:16,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 04:32:16,982 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:16,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:16,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1532808533, now seen corresponding path program 22 times [2020-10-13 04:32:16,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:16,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168182969] [2020-10-13 04:32:16,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:16,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:17,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:17,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:17,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:22,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 04:32:22,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:22,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 04:32:22,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:22,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:22,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:22,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:22,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:22,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:22,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:22,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:22,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:22,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:22,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:22,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:22,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:22,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:22,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:22,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:32:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:22,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:22,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:22,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:22,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 04:32:22,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:22,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:22,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 04:32:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:22,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:22,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:22,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:22,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 04:32:22,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:22,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:22,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:22,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:22,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:22,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 04:32:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:22,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:22,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:22,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:22,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 04:32:22,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:22,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:22,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:22,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:22,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 04:32:22,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168182969] [2020-10-13 04:32:22,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:22,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:32:22,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086388359] [2020-10-13 04:32:22,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:32:22,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:22,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:32:22,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:22,305 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-13 04:32:22,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:22,438 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2020-10-13 04:32:22,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:32:22,438 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-13 04:32:22,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:22,439 INFO L225 Difference]: With dead ends: 122 [2020-10-13 04:32:22,439 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 04:32:22,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:22,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 04:32:22,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 04:32:22,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 04:32:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 04:32:22,445 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-13 04:32:22,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:22,445 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 04:32:22,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:32:22,446 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 04:32:22,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 04:32:22,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:22,447 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 9, 9, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:22,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 04:32:22,452 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:22,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:22,453 INFO L82 PathProgramCache]: Analyzing trace with hash 238910733, now seen corresponding path program 23 times [2020-10-13 04:32:22,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:22,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802997588] [2020-10-13 04:32:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:22,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:27,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:27,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 04:32:27,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:27,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 04:32:27,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:27,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:27,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 04:32:27,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:27,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:27,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:27,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:27,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:27,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:27,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:27,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:27,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:27,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:27,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:32:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:27,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:27,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:27,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:27,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:32:27,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:27,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 04:32:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:27,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:27,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:27,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:27,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:27,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:27,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 04:32:27,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:27,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:27,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 04:32:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:27,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:27,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:27,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:27,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:27,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:27,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 04:32:27,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:27,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:27,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:27,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:27,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2020-10-13 04:32:27,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802997588] [2020-10-13 04:32:27,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:27,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:32:27,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53796965] [2020-10-13 04:32:27,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:32:27,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:27,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:32:27,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:27,774 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 12 states. [2020-10-13 04:32:28,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:28,040 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-10-13 04:32:28,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:32:28,041 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2020-10-13 04:32:28,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:28,042 INFO L225 Difference]: With dead ends: 123 [2020-10-13 04:32:28,042 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 04:32:28,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 04:32:28,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 04:32:28,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 04:32:28,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 04:32:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 04:32:28,049 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 114 [2020-10-13 04:32:28,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:28,049 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 04:32:28,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:32:28,050 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 04:32:28,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 04:32:28,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:28,051 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:28,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 04:32:28,052 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:28,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:28,052 INFO L82 PathProgramCache]: Analyzing trace with hash -851885845, now seen corresponding path program 24 times [2020-10-13 04:32:28,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:28,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793378392] [2020-10-13 04:32:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:28,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:28,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:28,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:28,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:33,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 04:32:33,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:33,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 04:32:33,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 04:32:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:33,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:33,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:33,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:33,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:33,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:33,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:32:33,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:33,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:33,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:33,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:33,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:33,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:32:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:33,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:33,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:33,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:33,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 04:32:33,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:33,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:33,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 04:32:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:33,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:33,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:33,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:33,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 04:32:33,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:33,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:33,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:33,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:33,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:33,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 04:32:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:33,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:33,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:33,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:33,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 04:32:33,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:33,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:33,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:32:33,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:33,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:33,396 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2020-10-13 04:32:33,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793378392] [2020-10-13 04:32:33,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:33,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:32:33,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521499998] [2020-10-13 04:32:33,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:32:33,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:33,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:32:33,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:33,397 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 12 states. [2020-10-13 04:32:33,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:33,522 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-13 04:32:33,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:32:33,522 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-13 04:32:33,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:33,523 INFO L225 Difference]: With dead ends: 107 [2020-10-13 04:32:33,524 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 04:32:33,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:33,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 04:32:33,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 04:32:33,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 04:32:33,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-13 04:32:33,532 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 120 [2020-10-13 04:32:33,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:33,533 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-13 04:32:33,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:32:33,533 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-13 04:32:33,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 04:32:33,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:33,535 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:33,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 04:32:33,535 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:33,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:33,536 INFO L82 PathProgramCache]: Analyzing trace with hash 731575913, now seen corresponding path program 25 times [2020-10-13 04:32:33,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:33,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618893346] [2020-10-13 04:32:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:38,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 04:32:38,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:38,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:32:38,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 04:32:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:38,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:38,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:38,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:38,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:38,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:38,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:38,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:38,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:38,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:38,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:38,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:38,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:32:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:38,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:38,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:38,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:38,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 04:32:38,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:38,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:38,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 04:32:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:38,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:38,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:38,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:38,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 04:32:38,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:38,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:38,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:32:38,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:38,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:38,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 04:32:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:38,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:38,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:38,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:38,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 04:32:38,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:38,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:38,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:32:38,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:38,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 0 proven. 449 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2020-10-13 04:32:38,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618893346] [2020-10-13 04:32:38,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:38,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:32:38,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952418522] [2020-10-13 04:32:38,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:32:38,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:38,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:32:38,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:38,924 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 13 states. [2020-10-13 04:32:39,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:39,201 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2020-10-13 04:32:39,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:32:39,201 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-13 04:32:39,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:39,202 INFO L225 Difference]: With dead ends: 131 [2020-10-13 04:32:39,202 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 04:32:39,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-13 04:32:39,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 04:32:39,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 04:32:39,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 04:32:39,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-13 04:32:39,213 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 122 [2020-10-13 04:32:39,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:39,213 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-13 04:32:39,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:32:39,213 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-13 04:32:39,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 04:32:39,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:39,214 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:39,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 04:32:39,215 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:39,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:39,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1193714759, now seen corresponding path program 26 times [2020-10-13 04:32:39,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:39,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340465198] [2020-10-13 04:32:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:39,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:39,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:39,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:39,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:44,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 04:32:44,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:44,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:32:44,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:44,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:44,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:44,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:44,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:44,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:44,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:32:44,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:44,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:44,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:44,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:44,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:44,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:32:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:44,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:44,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:44,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:44,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 04:32:44,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:44,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:44,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:44,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 04:32:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:44,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:44,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:44,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:44,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 04:32:44,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:44,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:44,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:44,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:44,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 04:32:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:44,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:44,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:44,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:44,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 04:32:44,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:44,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:44,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:44,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:44,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2020-10-13 04:32:44,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340465198] [2020-10-13 04:32:44,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:44,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:32:44,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058158425] [2020-10-13 04:32:44,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:32:44,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:44,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:32:44,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:44,591 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 13 states. [2020-10-13 04:32:44,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:44,701 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2020-10-13 04:32:44,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:32:44,702 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 128 [2020-10-13 04:32:44,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:44,703 INFO L225 Difference]: With dead ends: 136 [2020-10-13 04:32:44,703 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 04:32:44,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:44,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 04:32:44,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 04:32:44,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 04:32:44,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-13 04:32:44,710 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2020-10-13 04:32:44,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:44,710 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-13 04:32:44,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:32:44,711 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-13 04:32:44,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 04:32:44,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:44,712 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:44,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 04:32:44,712 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:44,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:44,713 INFO L82 PathProgramCache]: Analyzing trace with hash 938732201, now seen corresponding path program 27 times [2020-10-13 04:32:44,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:44,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459520769] [2020-10-13 04:32:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:44,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:49,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:49,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 04:32:49,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:49,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 04:32:49,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 04:32:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:49,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:49,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:49,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:49,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:49,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:49,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:49,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:49,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:49,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:49,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:49,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:49,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:49,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:32:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:49,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:49,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:49,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:49,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:49,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:49,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 04:32:49,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:49,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:49,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 04:32:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:49,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:49,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:50,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:50,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:50,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:50,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 04:32:50,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:50,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:50,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:50,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:50,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:50,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 04:32:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:50,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:50,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:50,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:50,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:50,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:50,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 04:32:50,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:50,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 04:32:50,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459520769] [2020-10-13 04:32:50,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:50,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:32:50,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212614764] [2020-10-13 04:32:50,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:32:50,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:50,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:32:50,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:50,128 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 13 states. [2020-10-13 04:32:50,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:50,230 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-10-13 04:32:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:32:50,231 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-10-13 04:32:50,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:50,232 INFO L225 Difference]: With dead ends: 115 [2020-10-13 04:32:50,233 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 04:32:50,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:50,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 04:32:50,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 04:32:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 04:32:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-13 04:32:50,239 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 130 [2020-10-13 04:32:50,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:50,239 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-13 04:32:50,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:32:50,239 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-13 04:32:50,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 04:32:50,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:50,240 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:50,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 04:32:50,240 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:50,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:50,241 INFO L82 PathProgramCache]: Analyzing trace with hash -128282457, now seen corresponding path program 28 times [2020-10-13 04:32:50,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:50,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640521090] [2020-10-13 04:32:50,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:50,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:50,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:50,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:50,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:55,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:55,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 04:32:55,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:55,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-13 04:32:55,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:55,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:32:55,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 04:32:55,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:32:55,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:55,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:55,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:55,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:55,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:55,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:55,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:32:55,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:55,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:55,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:55,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:55,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:55,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:32:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:55,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:55,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:55,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:55,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:55,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 04:32:55,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:55,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:55,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 04:32:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:55,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:55,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:55,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:55,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:55,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 04:32:55,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:32:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:32:55,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:55,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 04:32:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:55,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:55,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:55,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:55,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:55,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:55,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 04:32:55,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:55,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:55,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:55,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:55,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:55,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 224 proven. 324 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2020-10-13 04:32:55,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640521090] [2020-10-13 04:32:55,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:55,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:32:55,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799767875] [2020-10-13 04:32:55,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:32:55,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:55,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:32:55,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:32:55,691 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 14 states. [2020-10-13 04:32:56,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:56,012 INFO L93 Difference]: Finished difference Result 141 states and 151 transitions. [2020-10-13 04:32:56,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:32:56,012 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-13 04:32:56,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:56,013 INFO L225 Difference]: With dead ends: 141 [2020-10-13 04:32:56,013 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 04:32:56,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-13 04:32:56,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 04:32:56,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 04:32:56,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 04:32:56,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-13 04:32:56,024 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 132 [2020-10-13 04:32:56,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:56,025 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-13 04:32:56,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:32:56,025 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-13 04:32:56,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 04:32:56,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:56,026 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:56,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 04:32:56,026 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:56,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:56,027 INFO L82 PathProgramCache]: Analyzing trace with hash 792344325, now seen corresponding path program 29 times [2020-10-13 04:32:56,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:56,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868796302] [2020-10-13 04:32:56,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:56,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:56,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:56,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:56,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:01,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:01,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 04:33:01,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:01,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 04:33:01,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:01,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:33:01,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 04:33:01,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:33:01,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:01,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:01,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:01,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:01,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:01,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:01,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:01,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:01,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:01,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:01,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:01,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:01,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:33:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:01,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:01,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:01,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:01,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:01,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:01,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 04:33:01,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:01,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:01,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:01,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:01,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:01,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 04:33:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:01,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:01,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:01,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:01,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:01,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:01,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 04:33:01,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:01,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:01,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 04:33:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:01,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:01,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:01,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:01,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:01,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:01,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 04:33:01,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:01,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:33:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:01,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2020-10-13 04:33:01,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868796302] [2020-10-13 04:33:01,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:01,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:33:01,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040049127] [2020-10-13 04:33:01,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:33:01,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:01,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:33:01,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:33:01,499 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 14 states. [2020-10-13 04:33:01,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:01,634 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-10-13 04:33:01,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:33:01,634 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 138 [2020-10-13 04:33:01,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:01,635 INFO L225 Difference]: With dead ends: 121 [2020-10-13 04:33:01,635 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 04:33:01,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:33:01,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 04:33:01,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-13 04:33:01,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 04:33:01,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-13 04:33:01,647 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 138 [2020-10-13 04:33:01,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:01,648 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-13 04:33:01,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:33:01,649 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-13 04:33:01,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 04:33:01,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:01,650 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:01,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 04:33:01,651 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:01,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:01,651 INFO L82 PathProgramCache]: Analyzing trace with hash -53633533, now seen corresponding path program 30 times [2020-10-13 04:33:01,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:01,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7968376] [2020-10-13 04:33:01,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:01,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:01,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:01,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:01,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:06,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:06,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 04:33:06,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:06,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 04:33:06,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:06,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:33:06,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:06,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:33:06,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:06,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:06,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:06,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:06,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:06,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:06,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:06,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:06,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:06,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:06,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:06,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:06,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:33:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:06,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:06,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:06,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:06,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:06,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:06,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 04:33:06,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:06,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:06,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:33:06,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:06,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:06,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 04:33:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:06,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:06,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:06,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:06,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:06,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:06,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 04:33:06,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:33:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:06,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:06,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 04:33:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:06,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:06,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:07,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:07,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:07,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:07,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 04:33:07,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:07,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:07,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:33:07,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:07,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 04:33:07,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7968376] [2020-10-13 04:33:07,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:07,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:33:07,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694383789] [2020-10-13 04:33:07,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:33:07,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:07,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:33:07,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:33:07,085 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 14 states. [2020-10-13 04:33:07,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:07,219 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-10-13 04:33:07,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:33:07,220 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 140 [2020-10-13 04:33:07,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:07,221 INFO L225 Difference]: With dead ends: 150 [2020-10-13 04:33:07,221 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 04:33:07,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:33:07,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 04:33:07,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 04:33:07,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 04:33:07,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-13 04:33:07,228 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 140 [2020-10-13 04:33:07,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:07,228 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-13 04:33:07,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:33:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-13 04:33:07,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 04:33:07,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:07,229 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:07,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 04:33:07,230 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:07,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:07,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1141530981, now seen corresponding path program 31 times [2020-10-13 04:33:07,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:07,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597707766] [2020-10-13 04:33:07,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:07,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:07,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:07,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:07,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:12,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:12,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 04:33:12,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:12,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:33:12,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:12,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:33:12,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 04:33:12,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:33:12,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:12,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:12,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:12,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:12,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:12,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:12,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:12,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:12,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:12,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:12,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:33:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:12,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:12,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:12,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:12,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:12,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:12,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 04:33:12,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:12,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:12,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:12,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:12,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:12,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 04:33:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:12,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:12,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:12,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:12,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:12,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:12,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 04:33:12,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:12,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:12,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:12,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:12,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:12,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 04:33:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:12,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:12,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:12,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:12,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:12,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:12,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 04:33:12,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:33:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:12,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:12,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 04:33:12,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597707766] [2020-10-13 04:33:12,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:12,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:33:12,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680761649] [2020-10-13 04:33:12,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:33:12,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:12,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:33:12,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:12,659 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 15 states. [2020-10-13 04:33:12,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:12,812 INFO L93 Difference]: Finished difference Result 125 states and 130 transitions. [2020-10-13 04:33:12,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:33:12,813 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 142 [2020-10-13 04:33:12,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:12,814 INFO L225 Difference]: With dead ends: 125 [2020-10-13 04:33:12,814 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 04:33:12,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:12,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 04:33:12,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 04:33:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 04:33:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-13 04:33:12,819 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 142 [2020-10-13 04:33:12,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:12,819 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-13 04:33:12,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:33:12,820 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-13 04:33:12,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 04:33:12,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:12,820 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 12, 12, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:12,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 04:33:12,821 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:12,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:12,821 INFO L82 PathProgramCache]: Analyzing trace with hash 507293795, now seen corresponding path program 32 times [2020-10-13 04:33:12,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:12,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381539927] [2020-10-13 04:33:12,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:12,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:12,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:12,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:12,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:17,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:17,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 04:33:17,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:17,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 04:33:17,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:17,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:33:17,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 04:33:17,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:33:17,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:17,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:17,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:17,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:17,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:17,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:17,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:17,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:17,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:17,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:17,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:17,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:17,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:33:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:17,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:17,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:17,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:17,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:17,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 04:33:17,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:17,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:33:17,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:33:17,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:33:17,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:18,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 04:33:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:18,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:18,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:18,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:18,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:18,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:18,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 04:33:18,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:18,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:18,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:33:18,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:18,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 04:33:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:18,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:18,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:18,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:18,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:18,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:18,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 04:33:18,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:33:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:18,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:18,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 0 proven. 657 refuted. 0 times theorem prover too weak. 778 trivial. 0 not checked. [2020-10-13 04:33:18,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381539927] [2020-10-13 04:33:18,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:18,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:33:18,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557519845] [2020-10-13 04:33:18,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:33:18,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:18,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:33:18,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:18,275 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 15 states. [2020-10-13 04:33:18,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:18,630 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2020-10-13 04:33:18,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:33:18,631 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 144 [2020-10-13 04:33:18,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:18,632 INFO L225 Difference]: With dead ends: 155 [2020-10-13 04:33:18,632 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 04:33:18,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-13 04:33:18,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 04:33:18,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 04:33:18,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 04:33:18,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-13 04:33:18,640 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 144 [2020-10-13 04:33:18,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:18,640 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-13 04:33:18,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:33:18,641 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-13 04:33:18,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 04:33:18,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:18,642 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:18,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 04:33:18,642 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:18,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:18,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1161209919, now seen corresponding path program 33 times [2020-10-13 04:33:18,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:18,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075100219] [2020-10-13 04:33:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:18,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:18,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:18,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:18,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:23,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:23,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 04:33:23,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:23,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:33:23,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:23,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:33:23,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:23,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:33:23,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:23,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:23,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:23,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:23,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:23,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:23,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:23,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:23,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:23,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:23,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:23,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:23,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:33:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:23,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:23,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:23,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:23,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:23,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:23,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 04:33:23,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:23,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:23,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:23,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:23,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:23,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 04:33:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:23,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:23,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:24,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:24,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:24,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:24,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 04:33:24,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:24,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:24,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:24,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:24,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:24,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 04:33:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:24,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:24,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:24,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:24,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:24,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:24,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 04:33:24,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:24,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:24,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:24,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:24,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:24,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2020-10-13 04:33:24,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075100219] [2020-10-13 04:33:24,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:24,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:33:24,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971178884] [2020-10-13 04:33:24,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:33:24,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:24,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:33:24,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:24,143 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 15 states. [2020-10-13 04:33:24,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:24,298 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2020-10-13 04:33:24,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:33:24,298 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-10-13 04:33:24,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:24,299 INFO L225 Difference]: With dead ends: 160 [2020-10-13 04:33:24,299 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 04:33:24,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:24,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 04:33:24,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 04:33:24,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 04:33:24,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-13 04:33:24,308 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 150 [2020-10-13 04:33:24,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:24,309 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-13 04:33:24,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:33:24,309 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-13 04:33:24,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 04:33:24,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:24,310 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:24,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 04:33:24,310 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:24,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1522190499, now seen corresponding path program 34 times [2020-10-13 04:33:24,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:24,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410751999] [2020-10-13 04:33:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:24,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:24,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:24,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:24,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:29,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:29,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 04:33:29,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:29,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 04:33:29,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 04:33:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:29,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:29,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:29,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:29,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:29,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:29,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:29,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:29,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:29,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:29,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:33:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:29,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:29,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:29,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:29,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:29,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:29,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 04:33:29,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:29,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:29,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 04:33:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:29,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:29,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:29,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:29,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:29,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:29,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 04:33:29,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:29,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:29,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 04:33:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:29,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:29,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:29,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:29,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:29,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:29,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 04:33:29,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:29,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:29,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:29,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:29,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:29,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2020-10-13 04:33:29,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410751999] [2020-10-13 04:33:29,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:29,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:33:29,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665038250] [2020-10-13 04:33:29,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:33:29,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:29,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:33:29,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:29,852 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 16 states. [2020-10-13 04:33:30,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:30,036 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2020-10-13 04:33:30,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:33:30,037 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 152 [2020-10-13 04:33:30,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:30,038 INFO L225 Difference]: With dead ends: 133 [2020-10-13 04:33:30,038 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 04:33:30,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:30,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 04:33:30,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 04:33:30,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 04:33:30,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-13 04:33:30,046 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 152 [2020-10-13 04:33:30,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:30,046 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-13 04:33:30,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:33:30,046 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-13 04:33:30,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 04:33:30,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:30,047 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 13, 13, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:30,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 04:33:30,048 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:30,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:30,048 INFO L82 PathProgramCache]: Analyzing trace with hash -435902431, now seen corresponding path program 35 times [2020-10-13 04:33:30,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:30,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16792194] [2020-10-13 04:33:30,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:30,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:30,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:30,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:30,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:35,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:35,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 04:33:35,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:35,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 04:33:35,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-13 04:33:35,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:35,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:35,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:35,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:35,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:35,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:35,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:35,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:35,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:35,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:35,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:33:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:35,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:35,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:35,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:35,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:35,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:35,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 04:33:35,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:35,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:35,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 04:33:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:35,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:35,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:35,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:35,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:35,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 04:33:35,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:35,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:35,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:33:35,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:35,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:35,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 04:33:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:35,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:35,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:35,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:35,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:35,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:35,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 04:33:35,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:35,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:35,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:35,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:35,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:35,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 316 proven. 460 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2020-10-13 04:33:35,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16792194] [2020-10-13 04:33:35,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:35,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:33:35,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285465172] [2020-10-13 04:33:35,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:33:35,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:35,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:33:35,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:35,591 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 16 states. [2020-10-13 04:33:35,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:35,961 INFO L93 Difference]: Finished difference Result 165 states and 175 transitions. [2020-10-13 04:33:35,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:33:35,962 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 154 [2020-10-13 04:33:35,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:35,963 INFO L225 Difference]: With dead ends: 165 [2020-10-13 04:33:35,963 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 04:33:35,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-13 04:33:35,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 04:33:35,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-13 04:33:35,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 04:33:35,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 04:33:35,969 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 154 [2020-10-13 04:33:35,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:35,970 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 04:33:35,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:33:35,970 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 04:33:35,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 04:33:35,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:35,971 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:35,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 04:33:35,971 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:35,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:35,971 INFO L82 PathProgramCache]: Analyzing trace with hash 714663935, now seen corresponding path program 36 times [2020-10-13 04:33:35,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:35,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313816024] [2020-10-13 04:33:35,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:35,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:36,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:36,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:36,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:41,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:41,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 04:33:41,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:41,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-13 04:33:41,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:41,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:41,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:41,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:41,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:41,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:41,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:41,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:41,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:41,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:41,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:41,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:41,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:41,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:41,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:41,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:41,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:33:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:41,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:41,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:41,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:41,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:41,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:41,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 04:33:41,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:41,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:41,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:41,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:41,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:41,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 04:33:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:41,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:41,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:41,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:41,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:41,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:41,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 04:33:41,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:41,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:41,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 04:33:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:41,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:41,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:41,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:41,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:41,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:41,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 04:33:41,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:41,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:41,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:41,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1927 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-13 04:33:41,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313816024] [2020-10-13 04:33:41,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:41,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:33:41,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740512669] [2020-10-13 04:33:41,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:33:41,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:41,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:33:41,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:41,532 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 16 states. [2020-10-13 04:33:41,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:41,684 INFO L93 Difference]: Finished difference Result 170 states and 178 transitions. [2020-10-13 04:33:41,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:33:41,685 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 160 [2020-10-13 04:33:41,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:41,686 INFO L225 Difference]: With dead ends: 170 [2020-10-13 04:33:41,686 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 04:33:41,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:41,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 04:33:41,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 04:33:41,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 04:33:41,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-13 04:33:41,693 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 160 [2020-10-13 04:33:41,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:41,693 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-13 04:33:41,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:33:41,693 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-13 04:33:41,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 04:33:41,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:41,694 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:41,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 04:33:41,695 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:41,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:41,695 INFO L82 PathProgramCache]: Analyzing trace with hash -781965727, now seen corresponding path program 37 times [2020-10-13 04:33:41,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:41,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360362168] [2020-10-13 04:33:41,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:41,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:41,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:41,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:41,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:46,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:46,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 04:33:46,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:46,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 04:33:46,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:46,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:46,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-13 04:33:46,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:46,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:46,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:46,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:46,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:46,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:46,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:46,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:46,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:46,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:33:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:46,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:46,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:46,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:46,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:46,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:46,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 04:33:46,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:46,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:46,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 04:33:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:46,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:46,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:46,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:46,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:46,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 04:33:46,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:46,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:46,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:33:46,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:46,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:47,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 04:33:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:47,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:47,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:47,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:47,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:47,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:47,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 04:33:47,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:47,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:47,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 368 proven. 537 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2020-10-13 04:33:47,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360362168] [2020-10-13 04:33:47,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:47,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:33:47,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767370371] [2020-10-13 04:33:47,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:33:47,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:47,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:33:47,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:47,223 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 17 states. [2020-10-13 04:33:47,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:47,652 INFO L93 Difference]: Finished difference Result 171 states and 181 transitions. [2020-10-13 04:33:47,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:33:47,652 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 162 [2020-10-13 04:33:47,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:47,653 INFO L225 Difference]: With dead ends: 171 [2020-10-13 04:33:47,654 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 04:33:47,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-13 04:33:47,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 04:33:47,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 04:33:47,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 04:33:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-13 04:33:47,661 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 162 [2020-10-13 04:33:47,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:47,661 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-13 04:33:47,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:33:47,661 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-13 04:33:47,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 04:33:47,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:47,662 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:47,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 04:33:47,663 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:47,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:47,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1286277569, now seen corresponding path program 38 times [2020-10-13 04:33:47,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:47,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49740809] [2020-10-13 04:33:47,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:47,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:47,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:47,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:47,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:52,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:52,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 04:33:52,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:52,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 04:33:52,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:52,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:52,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:52,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:52,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:52,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:52,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:52,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:52,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:52,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:52,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:52,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:52,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:52,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:52,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:52,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:33:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:52,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:52,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:52,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:52,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:52,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:52,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 04:33:52,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:52,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:52,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:52,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:52,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:52,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 04:33:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:53,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:53,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:53,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:53,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:53,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:53,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-13 04:33:53,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:53,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:53,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:53,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 04:33:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:53,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:53,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:53,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:53,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:53,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:53,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 04:33:53,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:53,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:53,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:53,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:53,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:53,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2201 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2032 trivial. 0 not checked. [2020-10-13 04:33:53,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49740809] [2020-10-13 04:33:53,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:53,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:33:53,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106388536] [2020-10-13 04:33:53,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:33:53,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:53,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:33:53,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:53,291 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 17 states. [2020-10-13 04:33:53,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:53,416 INFO L93 Difference]: Finished difference Result 176 states and 184 transitions. [2020-10-13 04:33:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:33:53,416 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 168 [2020-10-13 04:33:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:53,417 INFO L225 Difference]: With dead ends: 176 [2020-10-13 04:33:53,417 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 04:33:53,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:53,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 04:33:53,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 04:33:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 04:33:53,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-13 04:33:53,423 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 168 [2020-10-13 04:33:53,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:53,423 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-13 04:33:53,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:33:53,423 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-13 04:33:53,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 04:33:53,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:53,425 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:53,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 04:33:53,425 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:53,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:53,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1271614815, now seen corresponding path program 39 times [2020-10-13 04:33:53,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:53,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937840660] [2020-10-13 04:33:53,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:53,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:53,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:53,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:58,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:58,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 04:33:58,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:58,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 04:33:58,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-13 04:33:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:58,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:58,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:58,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:58,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:58,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:58,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:58,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:58,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:58,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:58,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:33:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:58,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:58,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:58,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:58,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:58,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:58,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-13 04:33:58,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:58,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:58,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 04:33:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:58,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:58,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:58,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:58,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:58,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:58,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 04:33:58,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:58,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:58,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:58,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:58,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:58,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 04:33:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:58,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:58,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:58,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:58,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:58,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:58,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 04:33:58,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:58,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:58,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:59,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:59,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:59,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2228 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-13 04:33:59,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937840660] [2020-10-13 04:33:59,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:59,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:33:59,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501388812] [2020-10-13 04:33:59,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:33:59,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:59,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:33:59,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:59,015 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 17 states. [2020-10-13 04:33:59,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:59,121 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-10-13 04:33:59,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:33:59,121 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 170 [2020-10-13 04:33:59,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:59,123 INFO L225 Difference]: With dead ends: 147 [2020-10-13 04:33:59,123 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 04:33:59,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:59,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 04:33:59,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 04:33:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 04:33:59,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-13 04:33:59,131 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 170 [2020-10-13 04:33:59,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:59,133 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-13 04:33:59,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:33:59,134 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-13 04:33:59,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 04:33:59,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:59,135 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:59,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 04:33:59,135 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:59,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:59,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1004984991, now seen corresponding path program 40 times [2020-10-13 04:33:59,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:59,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332767872] [2020-10-13 04:33:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:59,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:59,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:59,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:00,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:04,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:04,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 04:34:04,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:34:04,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-13 04:34:04,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:04,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:34:04,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 04:34:04,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:34:04,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:04,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:04,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:04,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:04,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:04,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:04,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:04,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:04,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:34:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:04,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:04,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:04,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:04,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:34:04,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:04,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 04:34:04,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:04,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:04,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 04:34:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:04,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:04,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:04,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:34:04,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:04,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 04:34:04,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:04,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:34:04,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:34:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:34:04,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:04,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 04:34:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:04,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:04,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:04,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:04,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:34:04,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:04,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-13 04:34:04,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:04,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:04,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:34:04,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:04,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 424 proven. 620 refuted. 0 times theorem prover too weak. 1211 trivial. 0 not checked. [2020-10-13 04:34:04,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332767872] [2020-10-13 04:34:04,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:04,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:34:04,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080936053] [2020-10-13 04:34:04,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:34:04,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:04,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:34:04,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:34:04,824 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 18 states. [2020-10-13 04:34:05,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:05,254 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2020-10-13 04:34:05,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:34:05,255 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2020-10-13 04:34:05,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:05,256 INFO L225 Difference]: With dead ends: 181 [2020-10-13 04:34:05,256 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 04:34:05,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 04:34:05,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 04:34:05,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-13 04:34:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 04:34:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-13 04:34:05,262 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 172 [2020-10-13 04:34:05,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:05,262 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-13 04:34:05,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:34:05,262 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-13 04:34:05,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 04:34:05,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:05,263 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:05,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 04:34:05,264 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:05,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:05,264 INFO L82 PathProgramCache]: Analyzing trace with hash -566287619, now seen corresponding path program 41 times [2020-10-13 04:34:05,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:05,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002276719] [2020-10-13 04:34:05,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:05,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:05,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:05,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:05,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:10,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 04:34:10,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:34:10,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 04:34:10,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:34:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-13 04:34:10,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:34:10,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:10,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:10,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:10,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:10,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:10,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:10,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:10,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:10,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:34:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:10,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:10,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:34:10,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:10,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-13 04:34:10,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:10,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:10,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 04:34:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:10,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:10,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:34:10,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:10,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-13 04:34:10,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:10,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:10,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:10,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:10,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:10,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 04:34:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:10,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:11,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:11,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:34:11,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:11,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-13 04:34:11,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:11,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:11,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:34:11,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:11,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2522 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2326 trivial. 0 not checked. [2020-10-13 04:34:11,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002276719] [2020-10-13 04:34:11,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:11,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:34:11,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467547945] [2020-10-13 04:34:11,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:34:11,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:11,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:34:11,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:34:11,029 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 18 states. [2020-10-13 04:34:11,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:11,202 INFO L93 Difference]: Finished difference Result 153 states and 158 transitions. [2020-10-13 04:34:11,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:34:11,203 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 178 [2020-10-13 04:34:11,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:11,204 INFO L225 Difference]: With dead ends: 153 [2020-10-13 04:34:11,205 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 04:34:11,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:34:11,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 04:34:11,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-13 04:34:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 04:34:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-13 04:34:11,211 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 178 [2020-10-13 04:34:11,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:11,211 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-13 04:34:11,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:34:11,211 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-13 04:34:11,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 04:34:11,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:11,212 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:11,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 04:34:11,213 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:11,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:11,213 INFO L82 PathProgramCache]: Analyzing trace with hash 834472955, now seen corresponding path program 42 times [2020-10-13 04:34:11,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:11,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945723341] [2020-10-13 04:34:11,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:11,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:11,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:11,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:11,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking...