/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/reducercommutativity/avg20-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 07:37:16,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 07:37:16,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 07:37:16,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 07:37:16,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 07:37:16,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 07:37:16,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 07:37:16,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 07:37:16,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 07:37:16,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 07:37:16,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 07:37:16,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 07:37:16,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 07:37:16,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 07:37:16,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 07:37:16,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 07:37:16,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 07:37:16,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 07:37:16,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 07:37:16,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 07:37:16,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 07:37:16,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 07:37:16,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 07:37:16,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 07:37:16,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 07:37:16,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 07:37:16,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 07:37:16,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 07:37:16,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 07:37:16,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 07:37:16,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 07:37:16,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 07:37:16,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 07:37:16,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 07:37:16,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 07:37:16,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 07:37:16,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 07:37:16,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 07:37:16,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 07:37:16,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 07:37:16,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 07:37:16,170 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 [2020-10-14 07:37:16,211 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 07:37:16,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 07:37:16,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 07:37:16,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 07:37:16,214 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 07:37:16,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 07:37:16,215 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 07:37:16,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 07:37:16,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 07:37:16,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 07:37:16,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 07:37:16,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 07:37:16,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 07:37:16,217 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 07:37:16,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 07:37:16,218 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 07:37:16,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 07:37:16,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 07:37:16,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 07:37:16,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 07:37:16,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 07:37:16,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:37:16,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 07:37:16,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 07:37:16,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 07:37:16,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 07:37:16,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 07:37:16,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 07:37:16,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 07:37:16,220 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 07:37:16,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 07:37:16,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 07:37:16,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 07:37:16,562 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 07:37:16,562 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 07:37:16,563 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg20-2.i [2020-10-14 07:37:16,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/371460145/7ac75b888ccd44dea340b8c861399e6a/FLAG6148013ac [2020-10-14 07:37:17,062 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 07:37:17,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/avg20-2.i [2020-10-14 07:37:17,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/371460145/7ac75b888ccd44dea340b8c861399e6a/FLAG6148013ac [2020-10-14 07:37:17,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/371460145/7ac75b888ccd44dea340b8c861399e6a [2020-10-14 07:37:17,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 07:37:17,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 07:37:17,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 07:37:17,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 07:37:17,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 07:37:17,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:37:17" (1/1) ... [2020-10-14 07:37:17,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256ae262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:17, skipping insertion in model container [2020-10-14 07:37:17,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:37:17" (1/1) ... [2020-10-14 07:37:17,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 07:37:17,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 07:37:17,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:37:17,642 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 07:37:17,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:37:17,682 INFO L208 MainTranslator]: Completed translation [2020-10-14 07:37:17,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:17 WrapperNode [2020-10-14 07:37:17,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 07:37:17,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 07:37:17,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 07:37:17,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 07:37:17,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:17" (1/1) ... [2020-10-14 07:37:17,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:17" (1/1) ... [2020-10-14 07:37:17,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:17" (1/1) ... [2020-10-14 07:37:17,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:17" (1/1) ... [2020-10-14 07:37:17,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:17" (1/1) ... [2020-10-14 07:37:17,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:17" (1/1) ... [2020-10-14 07:37:17,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:17" (1/1) ... [2020-10-14 07:37:17,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 07:37:17,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 07:37:17,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 07:37:17,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 07:37:17,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:17" (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 [2020-10-14 07:37:17,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 07:37:17,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 07:37:17,892 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2020-10-14 07:37:17,892 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 07:37:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 07:37:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 07:37:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2020-10-14 07:37:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 07:37:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 07:37:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 07:37:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 07:37:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 07:37:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 07:37:17,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 07:37:18,159 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 07:37:18,159 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 07:37:18,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:37:18 BoogieIcfgContainer [2020-10-14 07:37:18,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 07:37:18,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 07:37:18,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 07:37:18,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 07:37:18,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:37:17" (1/3) ... [2020-10-14 07:37:18,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3874d293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:37:18, skipping insertion in model container [2020-10-14 07:37:18,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:17" (2/3) ... [2020-10-14 07:37:18,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3874d293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:37:18, skipping insertion in model container [2020-10-14 07:37:18,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:37:18" (3/3) ... [2020-10-14 07:37:18,177 INFO L109 eAbstractionObserver]: Analyzing ICFG avg20-2.i [2020-10-14 07:37:18,191 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 07:37:18,202 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 07:37:18,229 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 07:37:18,257 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 07:37:18,257 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 07:37:18,257 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 07:37:18,257 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 07:37:18,257 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 07:37:18,258 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 07:37:18,258 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 07:37:18,258 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 07:37:18,279 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-14 07:37:18,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:37:18,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:18,287 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] [2020-10-14 07:37:18,287 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:18,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:18,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-14 07:37:18,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:18,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985879550] [2020-10-14 07:37:18,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:18,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:18,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:18,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:18,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:19,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:19,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:19,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:19,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:37:19,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:37:19,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1457 [2020-10-14 07:37:19,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:19,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:19,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:19,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:37:19,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:19,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 07:37:19,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:19,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:19,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:19,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:19,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:19,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:37:19,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:19,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:19,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:19,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:37:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:19,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:19,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:19,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:19,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:19,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:19,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 07:37:19,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:19,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:19,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:19,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:19,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:37:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:19,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:19,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:19,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:19,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:19,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:19,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 07:37:19,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:19,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:19,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:19,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:37:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:20,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:20,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:20,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:20,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:20,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 07:37:20,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:20,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:37:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:20,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:20,034 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 07:37:20,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985879550] [2020-10-14 07:37:20,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:37:20,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 07:37:20,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921265523] [2020-10-14 07:37:20,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 07:37:20,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:20,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 07:37:20,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:37:20,064 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-14 07:37:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:20,196 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-14 07:37:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 07:37:20,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 07:37:20,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:20,211 INFO L225 Difference]: With dead ends: 54 [2020-10-14 07:37:20,211 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 07:37:20,216 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 [2020-10-14 07:37:20,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 07:37:20,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-14 07:37:20,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 07:37:20,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-14 07:37:20,303 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-14 07:37:20,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:20,304 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-14 07:37:20,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 07:37:20,305 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-14 07:37:20,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:37:20,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:20,316 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] [2020-10-14 07:37:20,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 07:37:20,318 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:20,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:20,318 INFO L82 PathProgramCache]: Analyzing trace with hash 721846027, now seen corresponding path program 1 times [2020-10-14 07:37:20,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:20,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908990108] [2020-10-14 07:37:20,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:20,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:20,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:20,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:21,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:21,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:21,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:37:21,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:37:21,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1595 [2020-10-14 07:37:21,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:21,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:21,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:37:21,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:37:21,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:37:21,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:21,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:21,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:21,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:21,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:21,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:21,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:37:21,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:21,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:21,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:21,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:21,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:21,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:37:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:21,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:21,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:21,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:21,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:21,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:21,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 07:37:21,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:21,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:21,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:21,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:37:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:22,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:22,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:22,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:22,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 07:37:22,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:22,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:37:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:37:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:37:22,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:22,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:37:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:22,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:22,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:22,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:22,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 07:37:22,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:22,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:22,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:22,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:37:22,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:22,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 07:37:22,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908990108] [2020-10-14 07:37:22,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:22,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 07:37:22,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833373043] [2020-10-14 07:37:22,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:37:22,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:22,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:37:22,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:37:22,065 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-14 07:37:22,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:22,159 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-14 07:37:22,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:37:22,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 07:37:22,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:22,161 INFO L225 Difference]: With dead ends: 45 [2020-10-14 07:37:22,161 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 07:37:22,162 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 [2020-10-14 07:37:22,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 07:37:22,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-14 07:37:22,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 07:37:22,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-14 07:37:22,170 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-14 07:37:22,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:22,171 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-14 07:37:22,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:37:22,171 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-14 07:37:22,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 07:37:22,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:22,173 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] [2020-10-14 07:37:22,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 07:37:22,173 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:22,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:22,174 INFO L82 PathProgramCache]: Analyzing trace with hash 540504713, now seen corresponding path program 1 times [2020-10-14 07:37:22,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:22,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817782263] [2020-10-14 07:37:22,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:22,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:25,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:25,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 07:37:25,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:25,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3131 [2020-10-14 07:37:25,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:25,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:25,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:37:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:37:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:37:25,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:25,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:25,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:25,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:25,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:25,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:25,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:37:25,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:25,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:25,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:25,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:25,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:25,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:25,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:37:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:25,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:25,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:25,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:25,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:25,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:25,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 07:37:25,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:25,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:37:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:25,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:25,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 07:37:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:25,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:25,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:25,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:25,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:25,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:25,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 07:37:25,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:25,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:37:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:25,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:25,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:37:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:25,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:25,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:25,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:25,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:25,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:25,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:37:25,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:25,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:25,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:25,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:37:25,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:25,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:25,447 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 07:37:25,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817782263] [2020-10-14 07:37:25,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:37:25,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:37:25,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454262547] [2020-10-14 07:37:25,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:37:25,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:25,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:37:25,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:37:25,450 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-14 07:37:25,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:25,517 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-10-14 07:37:25,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:37:25,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-14 07:37:25,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:25,519 INFO L225 Difference]: With dead ends: 48 [2020-10-14 07:37:25,519 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 07:37:25,520 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 [2020-10-14 07:37:25,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 07:37:25,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-14 07:37:25,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 07:37:25,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-14 07:37:25,527 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-14 07:37:25,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:25,527 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-14 07:37:25,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:37:25,527 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-14 07:37:25,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 07:37:25,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:25,529 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] [2020-10-14 07:37:25,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 07:37:25,529 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:25,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:25,530 INFO L82 PathProgramCache]: Analyzing trace with hash 2063023467, now seen corresponding path program 1 times [2020-10-14 07:37:25,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:25,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448777788] [2020-10-14 07:37:25,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:25,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:25,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:25,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:25,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:25,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:30,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:30,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:37:30,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:30,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4973 [2020-10-14 07:37:30,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:30,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:30,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:37:30,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 07:37:30,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:37:30,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:30,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:30,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:30,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:30,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:30,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:30,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:37:30,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:30,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:30,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:30,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:30,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:30,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:30,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:37:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:30,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:30,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:30,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:30,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:30,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:30,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 07:37:30,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:30,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:30,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:30,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:30,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:30,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:30,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:37:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:30,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:30,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:30,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:30,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:30,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:30,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 07:37:30,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:30,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:30,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:30,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:37:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:30,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:30,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:30,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:30,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:30,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:30,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 07:37:30,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:30,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:30,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:30,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:37:30,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:30,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:30,625 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-14 07:37:30,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448777788] [2020-10-14 07:37:30,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:37:30,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:37:30,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927722967] [2020-10-14 07:37:30,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:37:30,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:30,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:37:30,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:37:30,627 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-14 07:37:30,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:30,691 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-14 07:37:30,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:37:30,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-14 07:37:30,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:30,692 INFO L225 Difference]: With dead ends: 43 [2020-10-14 07:37:30,693 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 07:37:30,693 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 [2020-10-14 07:37:30,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 07:37:30,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-14 07:37:30,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 07:37:30,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-14 07:37:30,700 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-14 07:37:30,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:30,702 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-14 07:37:30,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:37:30,702 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-14 07:37:30,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 07:37:30,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:30,703 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] [2020-10-14 07:37:30,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 07:37:30,704 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:30,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:30,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1550668567, now seen corresponding path program 1 times [2020-10-14 07:37:30,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:30,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840388456] [2020-10-14 07:37:30,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:30,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:30,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:30,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:30,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:31,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:35,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:35,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 07:37:35,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:35,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 07:37:35,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:35,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:35,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:37:35,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 07:37:35,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:37:35,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:35,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:35,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:35,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:35,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:35,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:35,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:37:35,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:35,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:35,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:35,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:35,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:35,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:35,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:37:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:35,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:35,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:35,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:35,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:35,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:35,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:37:35,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:35,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:35,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:35,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:35,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:37:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:35,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:35,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:35,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:35,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 07:37:35,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:35,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:35,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:35,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:35,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:35,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:35,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 07:37:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:35,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:35,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:35,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:35,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:35,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 07:37:35,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:35,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:37:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:37:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:37:35,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:35,879 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 07:37:35,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840388456] [2020-10-14 07:37:35,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:35,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:37:35,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218677221] [2020-10-14 07:37:35,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:37:35,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:35,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:37:35,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:37:35,883 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-14 07:37:36,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:36,046 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-14 07:37:36,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:37:36,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-14 07:37:36,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:36,048 INFO L225 Difference]: With dead ends: 51 [2020-10-14 07:37:36,048 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 07:37:36,049 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 [2020-10-14 07:37:36,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 07:37:36,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-14 07:37:36,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 07:37:36,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-14 07:37:36,065 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-14 07:37:36,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:36,066 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-14 07:37:36,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:37:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-14 07:37:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 07:37:36,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:36,068 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-10-14 07:37:36,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 07:37:36,070 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:36,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:36,071 INFO L82 PathProgramCache]: Analyzing trace with hash 428974311, now seen corresponding path program 2 times [2020-10-14 07:37:36,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:36,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808675475] [2020-10-14 07:37:36,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:36,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:36,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:36,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:36,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:41,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:41,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 07:37:41,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:41,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 07:37:41,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:41,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:37:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 07:37:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:37:41,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:41,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:41,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:41,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:41,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:41,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:41,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:37:41,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:41,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:41,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:41,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:37:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:41,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:41,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:41,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:41,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:37:41,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:41,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 07:37:41,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:41,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:41,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:41,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 07:37:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:41,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:41,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:41,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:41,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:37:41,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:41,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:37:41,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:41,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:41,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:41,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:37:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:41,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:41,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:41,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:37:41,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:41,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 07:37:41,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:41,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:41,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:37:41,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:37:41,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:37:41,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:41,246 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-14 07:37:41,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808675475] [2020-10-14 07:37:41,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:41,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:37:41,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767132833] [2020-10-14 07:37:41,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:37:41,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:41,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:37:41,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:37:41,249 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-14 07:37:41,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:41,390 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-14 07:37:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:37:41,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-10-14 07:37:41,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:41,391 INFO L225 Difference]: With dead ends: 55 [2020-10-14 07:37:41,392 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 07:37:41,392 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 [2020-10-14 07:37:41,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 07:37:41,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 07:37:41,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 07:37:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-14 07:37:41,398 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2020-10-14 07:37:41,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:41,399 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-14 07:37:41,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:37:41,399 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-14 07:37:41,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 07:37:41,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:41,400 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-10-14 07:37:41,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 07:37:41,401 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:41,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:41,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1810554469, now seen corresponding path program 3 times [2020-10-14 07:37:41,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:41,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891870500] [2020-10-14 07:37:41,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:41,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:41,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:41,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:41,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:42,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:46,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 07:37:46,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:46,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 07:37:46,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:46,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:37:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 07:37:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:37:46,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:46,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:46,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:46,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:46,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:46,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:37:46,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:46,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:46,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:46,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:37:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:46,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:46,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:46,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:46,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 07:37:46,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:46,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:46,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:46,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:46,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:46,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:46,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:37:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:46,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:46,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:46,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:46,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 07:37:46,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:46,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:46,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 07:37:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:46,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:46,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:46,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 07:37:46,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:46,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:37:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:46,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 07:37:46,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891870500] [2020-10-14 07:37:46,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:46,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:37:46,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986063018] [2020-10-14 07:37:46,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:37:46,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:46,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:37:46,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:37:46,555 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-14 07:37:46,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:46,622 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-14 07:37:46,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:37:46,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-14 07:37:46,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:46,624 INFO L225 Difference]: With dead ends: 53 [2020-10-14 07:37:46,624 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 07:37:46,625 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 [2020-10-14 07:37:46,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 07:37:46,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-14 07:37:46,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 07:37:46,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-14 07:37:46,630 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 54 [2020-10-14 07:37:46,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:46,631 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-14 07:37:46,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:37:46,631 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-14 07:37:46,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 07:37:46,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:46,632 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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] [2020-10-14 07:37:46,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 07:37:46,632 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:46,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:46,633 INFO L82 PathProgramCache]: Analyzing trace with hash 591386467, now seen corresponding path program 4 times [2020-10-14 07:37:46,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:46,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651906256] [2020-10-14 07:37:46,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:46,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:47,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:51,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:51,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 07:37:51,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:51,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 07:37:51,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:51,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:51,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:37:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 07:37:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:37:51,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:51,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:51,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:51,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:51,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:51,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:51,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:37:51,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:51,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:51,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:51,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:51,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:51,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:51,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:37:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:51,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:51,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:51,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:51,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:51,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:51,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 07:37:51,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:51,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:51,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:51,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:37:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:51,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:51,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:51,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:51,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:51,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:51,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:37:51,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:51,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:51,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:51,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:51,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:51,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 07:37:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:51,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:51,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:51,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:51,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:51,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:51,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:37:51,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:51,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:37:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:51,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:51,795 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 07:37:51,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651906256] [2020-10-14 07:37:51,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:51,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:37:51,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718758816] [2020-10-14 07:37:51,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:37:51,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:51,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:37:51,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:37:51,801 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-14 07:37:51,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:51,881 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2020-10-14 07:37:51,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:37:51,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-14 07:37:51,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:51,883 INFO L225 Difference]: With dead ends: 55 [2020-10-14 07:37:51,883 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 07:37:51,884 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 [2020-10-14 07:37:51,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 07:37:51,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-14 07:37:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 07:37:51,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-14 07:37:51,890 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 56 [2020-10-14 07:37:51,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:51,890 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-14 07:37:51,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:37:51,890 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-14 07:37:51,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 07:37:51,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:51,892 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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] [2020-10-14 07:37:51,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 07:37:51,892 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:51,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:51,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1497008353, now seen corresponding path program 5 times [2020-10-14 07:37:51,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:51,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453913116] [2020-10-14 07:37:51,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:51,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:51,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:51,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:51,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:56,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:56,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:58,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 07:37:58,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:37:58,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6124 [2020-10-14 07:37:58,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:58,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:37:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:37:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:37:58,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:58,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:58,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:58,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:58,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:58,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:37:58,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:58,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:58,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:58,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:37:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:58,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:58,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:58,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:58,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 07:37:58,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:58,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:37:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:58,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:58,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:37:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:58,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:58,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:58,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:58,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 07:37:58,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:58,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:58,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:58,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:37:58,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:58,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:58,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 07:37:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:58,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:58,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:58,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:58,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 07:37:58,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:58,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:37:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-14 07:37:58,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453913116] [2020-10-14 07:37:58,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:58,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:37:58,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341895339] [2020-10-14 07:37:58,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:37:58,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:58,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:37:58,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:37:58,175 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-10-14 07:37:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:58,235 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-10-14 07:37:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:37:58,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-14 07:37:58,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:58,236 INFO L225 Difference]: With dead ends: 68 [2020-10-14 07:37:58,236 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 07:37:58,237 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 [2020-10-14 07:37:58,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 07:37:58,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-14 07:37:58,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 07:37:58,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-14 07:37:58,242 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-14 07:37:58,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:58,243 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-14 07:37:58,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:37:58,243 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-14 07:37:58,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 07:37:58,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:58,244 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] [2020-10-14 07:37:58,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 07:37:58,244 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:58,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:58,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1355149629, now seen corresponding path program 6 times [2020-10-14 07:37:58,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:58,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570743525] [2020-10-14 07:37:58,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:58,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:03,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 07:38:03,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:03,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 07:38:03,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:03,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:03,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:38:03,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:38:03,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:38:03,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:03,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:03,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:03,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:03,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:03,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:03,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:03,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:03,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:03,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 07:38:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:03,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:03,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:38:03,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:03,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 07:38:03,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:03,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:03,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:03,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:03,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:03,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:03,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 07:38:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:03,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:03,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:38:03,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:03,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 07:38:03,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:03,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:03,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:38:03,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:03,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:38:03,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:03,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 07:38:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:03,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:03,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:38:03,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:03,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 07:38:03,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:03,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:03,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:03,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:38:03,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:03,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:03,384 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 28 proven. 37 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-14 07:38:03,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570743525] [2020-10-14 07:38:03,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:03,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:38:03,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562634705] [2020-10-14 07:38:03,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:38:03,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:03,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:38:03,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:03,386 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 7 states. [2020-10-14 07:38:03,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:03,508 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-10-14 07:38:03,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:38:03,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-10-14 07:38:03,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:03,510 INFO L225 Difference]: With dead ends: 69 [2020-10-14 07:38:03,510 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 07:38:03,511 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 [2020-10-14 07:38:03,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 07:38:03,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-14 07:38:03,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 07:38:03,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-14 07:38:03,516 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-14 07:38:03,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:03,516 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-14 07:38:03,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:38:03,517 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-14 07:38:03,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 07:38:03,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:03,518 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 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] [2020-10-14 07:38:03,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 07:38:03,518 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:03,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:03,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1343834815, now seen corresponding path program 7 times [2020-10-14 07:38:03,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:03,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304906434] [2020-10-14 07:38:03,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:03,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:08,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:08,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 07:38:08,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:08,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:38:08,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:08,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:38:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 07:38:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:38:08,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:08,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:08,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:08,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:08,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:08,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:08,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:08,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:08,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:08,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:08,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:08,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:08,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:08,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 07:38:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:08,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:08,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:08,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:08,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:08,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:08,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:38:08,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:08,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:08,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:08,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:08,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:08,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:08,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 07:38:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:08,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:08,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:08,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:08,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:08,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:08,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:38:08,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:08,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:08,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:08,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:08,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:08,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:08,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 07:38:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:08,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:08,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:08,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:08,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:08,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:08,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 07:38:08,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:08,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:08,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-14 07:38:08,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304906434] [2020-10-14 07:38:08,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:08,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:38:08,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754936452] [2020-10-14 07:38:08,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:38:08,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:08,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:38:08,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:08,702 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-14 07:38:08,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:08,797 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-10-14 07:38:08,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:38:08,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-14 07:38:08,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:08,799 INFO L225 Difference]: With dead ends: 63 [2020-10-14 07:38:08,799 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 07:38:08,799 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 [2020-10-14 07:38:08,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 07:38:08,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-14 07:38:08,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 07:38:08,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-14 07:38:08,805 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 66 [2020-10-14 07:38:08,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:08,805 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-14 07:38:08,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:38:08,805 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-14 07:38:08,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 07:38:08,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:08,806 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 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] [2020-10-14 07:38:08,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 07:38:08,807 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:08,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:08,807 INFO L82 PathProgramCache]: Analyzing trace with hash 905336639, now seen corresponding path program 8 times [2020-10-14 07:38:08,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:08,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068994451] [2020-10-14 07:38:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:08,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:08,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:08,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:08,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:13,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:13,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 07:38:13,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:13,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 07:38:13,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:13,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:13,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:38:13,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:13,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:38:13,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:13,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:13,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:13,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:13,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:13,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:13,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:13,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:13,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:13,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:13,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:13,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:13,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:13,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 07:38:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:13,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:13,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:13,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:13,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:13,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:13,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 07:38:13,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:13,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:13,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:13,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:13,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:13,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:13,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 07:38:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:13,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:13,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:13,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:13,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:13,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:13,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 07:38:13,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:13,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:13,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:13,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 07:38:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:13,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:13,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:13,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:13,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:13,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:13,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 07:38:13,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:13,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:13,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:13,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:13,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:13,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-14 07:38:13,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068994451] [2020-10-14 07:38:13,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:13,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:38:13,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821861141] [2020-10-14 07:38:13,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:38:13,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:13,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:38:13,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:38:13,954 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-10-14 07:38:14,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:14,032 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2020-10-14 07:38:14,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:38:14,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 07:38:14,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:14,034 INFO L225 Difference]: With dead ends: 78 [2020-10-14 07:38:14,034 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 07:38:14,035 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 [2020-10-14 07:38:14,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 07:38:14,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-14 07:38:14,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 07:38:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-14 07:38:14,046 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-14 07:38:14,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:14,046 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-14 07:38:14,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:38:14,047 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-14 07:38:14,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 07:38:14,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:14,051 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] [2020-10-14 07:38:14,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 07:38:14,051 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:14,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:14,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1678153055, now seen corresponding path program 9 times [2020-10-14 07:38:14,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:14,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532080807] [2020-10-14 07:38:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:14,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:14,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:14,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:14,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:19,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:19,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 07:38:19,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:19,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 07:38:19,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:19,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:38:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 07:38:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:38:19,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:19,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:19,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:19,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:19,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:19,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:19,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:38:19,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:19,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:19,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:19,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:19,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:19,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:19,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:19,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:19,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:19,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:19,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:38:19,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:19,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:19,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:19,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:19,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 07:38:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:19,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:19,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:19,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:19,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:19,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 07:38:19,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:19,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:38:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:38:19,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:19,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 07:38:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:19,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:19,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:19,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:19,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:19,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:19,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 07:38:19,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:19,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:19,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:19,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:19,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:19,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 44 proven. 60 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-14 07:38:19,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532080807] [2020-10-14 07:38:19,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:19,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:38:19,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442762871] [2020-10-14 07:38:19,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:38:19,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:19,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:38:19,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:38:19,209 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 8 states. [2020-10-14 07:38:19,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:19,358 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-10-14 07:38:19,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:38:19,359 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-14 07:38:19,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:19,360 INFO L225 Difference]: With dead ends: 79 [2020-10-14 07:38:19,360 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 07:38:19,361 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 [2020-10-14 07:38:19,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 07:38:19,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-14 07:38:19,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 07:38:19,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-14 07:38:19,367 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-14 07:38:19,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:19,367 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-14 07:38:19,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:38:19,367 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-14 07:38:19,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 07:38:19,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:19,368 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 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] [2020-10-14 07:38:19,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 07:38:19,369 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:19,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:19,369 INFO L82 PathProgramCache]: Analyzing trace with hash -684928609, now seen corresponding path program 10 times [2020-10-14 07:38:19,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:19,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436877939] [2020-10-14 07:38:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:19,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:19,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:19,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:24,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:24,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 07:38:24,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:24,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 07:38:24,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:24,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:24,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:38:24,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 07:38:24,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:38:24,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:24,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:24,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:24,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:24,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:24,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:24,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:24,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:24,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:24,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:24,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:24,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:24,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:38:24,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:24,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 07:38:24,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:24,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:38:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:38:24,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:24,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 07:38:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:24,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:24,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:24,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:24,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:38:24,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:24,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 07:38:24,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:24,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:24,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:24,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:38:24,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:24,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:24,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 07:38:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:24,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:24,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:24,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:24,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:38:24,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:24,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 07:38:24,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:24,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:24,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:24,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:38:24,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:24,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-14 07:38:24,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436877939] [2020-10-14 07:38:24,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:24,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:38:24,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622333023] [2020-10-14 07:38:24,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:38:24,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:24,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:38:24,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:38:24,540 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 9 states. [2020-10-14 07:38:24,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:24,703 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-10-14 07:38:24,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:38:24,703 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-14 07:38:24,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:24,704 INFO L225 Difference]: With dead ends: 83 [2020-10-14 07:38:24,704 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 07:38:24,705 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 [2020-10-14 07:38:24,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 07:38:24,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-14 07:38:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 07:38:24,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-14 07:38:24,719 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 76 [2020-10-14 07:38:24,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:24,720 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-14 07:38:24,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:38:24,720 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-14 07:38:24,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 07:38:24,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:24,721 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 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] [2020-10-14 07:38:24,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 07:38:24,721 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:24,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:24,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1276722659, now seen corresponding path program 11 times [2020-10-14 07:38:24,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:24,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972054889] [2020-10-14 07:38:24,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:24,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:24,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:24,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:24,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:29,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:29,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 07:38:29,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:29,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 07:38:29,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:29,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:29,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:38:29,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 07:38:29,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:38:29,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:29,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:29,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:29,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:29,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:29,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:29,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:29,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:29,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:29,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:29,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:29,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:29,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:29,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:29,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:29,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:29,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:29,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 07:38:29,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:29,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:29,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:29,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 07:38:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:29,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:29,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:29,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:29,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:29,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:29,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 07:38:29,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:29,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:29,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:29,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 07:38:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:29,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:29,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:29,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:29,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:29,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:29,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 07:38:29,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:29,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:29,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:29,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:29,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:29,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:29,893 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-14 07:38:29,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972054889] [2020-10-14 07:38:29,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:29,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:38:29,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811078033] [2020-10-14 07:38:29,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:38:29,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:29,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:38:29,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:38:29,895 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-14 07:38:30,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:30,013 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-14 07:38:30,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:38:30,014 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-14 07:38:30,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:30,015 INFO L225 Difference]: With dead ends: 75 [2020-10-14 07:38:30,015 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 07:38:30,016 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 [2020-10-14 07:38:30,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 07:38:30,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-14 07:38:30,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 07:38:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-14 07:38:30,032 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 82 [2020-10-14 07:38:30,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:30,032 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-14 07:38:30,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:38:30,032 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-14 07:38:30,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 07:38:30,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:30,034 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 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] [2020-10-14 07:38:30,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 07:38:30,035 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:30,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:30,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1587774181, now seen corresponding path program 12 times [2020-10-14 07:38:30,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:30,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362864099] [2020-10-14 07:38:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:30,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:30,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:30,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:30,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:35,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 07:38:35,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:35,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 07:38:35,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:35,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:35,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:38:35,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 07:38:35,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:38:35,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:35,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:35,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:35,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:35,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:35,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:35,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:35,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:35,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:35,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:35,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:35,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:35,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:35,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 07:38:35,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:35,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:35,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:35,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:35,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:35,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:35,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 07:38:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:35,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:35,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:35,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:35,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 07:38:35,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:35,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:35,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:35,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:35,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:35,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:35,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 07:38:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:35,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:35,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:35,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:35,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 07:38:35,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:35,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:35,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-14 07:38:35,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362864099] [2020-10-14 07:38:35,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:35,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:38:35,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242044320] [2020-10-14 07:38:35,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:38:35,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:35,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:38:35,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:38:35,259 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 9 states. [2020-10-14 07:38:35,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:35,343 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-10-14 07:38:35,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:38:35,344 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-14 07:38:35,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:35,345 INFO L225 Difference]: With dead ends: 77 [2020-10-14 07:38:35,345 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 07:38:35,346 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 [2020-10-14 07:38:35,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 07:38:35,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-14 07:38:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 07:38:35,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-14 07:38:35,350 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 84 [2020-10-14 07:38:35,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:35,351 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-14 07:38:35,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:38:35,351 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-14 07:38:35,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 07:38:35,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:35,352 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 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] [2020-10-14 07:38:35,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 07:38:35,352 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:35,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:35,353 INFO L82 PathProgramCache]: Analyzing trace with hash 139423897, now seen corresponding path program 13 times [2020-10-14 07:38:35,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:35,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472770160] [2020-10-14 07:38:35,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:35,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:40,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:40,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 07:38:40,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:40,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 07:38:40,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:40,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:40,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:38:40,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:40,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:38:40,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:40,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:40,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:40,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:40,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:40,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:40,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:38:40,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:40,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:40,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:40,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:40,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:40,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:40,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:40,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:40,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:40,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:40,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:40,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 07:38:40,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:40,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:40,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:40,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:40,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 07:38:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:40,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:40,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:40,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:40,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:40,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:40,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 07:38:40,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:40,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:40,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:40,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:40,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:40,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:40,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 07:38:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:40,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:40,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:40,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:40,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:40,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:40,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 07:38:40,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:40,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:40,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:40,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:40,635 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-14 07:38:40,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472770160] [2020-10-14 07:38:40,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:40,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:38:40,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716428186] [2020-10-14 07:38:40,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:38:40,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:40,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:38:40,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:40,638 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-10-14 07:38:40,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:40,735 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-14 07:38:40,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:38:40,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-14 07:38:40,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:40,737 INFO L225 Difference]: With dead ends: 96 [2020-10-14 07:38:40,737 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 07:38:40,738 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 [2020-10-14 07:38:40,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 07:38:40,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-14 07:38:40,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 07:38:40,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-14 07:38:40,742 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 86 [2020-10-14 07:38:40,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:40,743 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-14 07:38:40,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:38:40,743 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-14 07:38:40,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 07:38:40,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:40,744 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 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] [2020-10-14 07:38:40,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 07:38:40,744 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:40,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:40,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1947021179, now seen corresponding path program 14 times [2020-10-14 07:38:40,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:40,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900587073] [2020-10-14 07:38:40,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:40,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:40,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:40,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:45,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:45,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 07:38:45,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:45,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 07:38:45,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:45,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:38:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 07:38:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:38:45,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:45,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:45,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:45,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:45,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:45,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:45,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:45,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:45,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:45,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:45,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:45,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:38:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:45,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:45,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:45,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:45,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:45,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 07:38:45,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:45,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:45,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:38:45,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:45,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:38:45,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:45,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 07:38:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:45,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:45,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:45,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:45,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:45,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:45,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 07:38:45,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:45,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:45,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:45,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:45,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:45,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 07:38:45,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 07:38:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:45,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:45,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:46,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:46,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:46,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:46,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 07:38:46,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:46,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:46,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:46,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:46,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 07:38:46,057 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-10-14 07:38:46,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900587073] [2020-10-14 07:38:46,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:46,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:38:46,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180482469] [2020-10-14 07:38:46,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:38:46,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:46,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:38:46,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:38:46,069 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 10 states. [2020-10-14 07:38:46,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:46,248 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2020-10-14 07:38:46,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:38:46,248 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-14 07:38:46,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:46,249 INFO L225 Difference]: With dead ends: 97 [2020-10-14 07:38:46,249 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 07:38:46,250 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 [2020-10-14 07:38:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 07:38:46,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-14 07:38:46,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 07:38:46,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-14 07:38:46,257 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 88 [2020-10-14 07:38:46,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:46,257 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-14 07:38:46,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:38:46,257 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-14 07:38:46,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 07:38:46,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:46,259 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 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] [2020-10-14 07:38:46,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 07:38:46,259 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:46,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:46,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1856932089, now seen corresponding path program 15 times [2020-10-14 07:38:46,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:46,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049091948] [2020-10-14 07:38:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:46,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:46,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:46,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:46,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:51,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 07:38:51,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:51,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 07:38:51,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:51,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:38:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 07:38:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:38:51,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:51,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:51,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:51,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:51,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:51,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:51,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:51,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:51,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:51,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:51,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:51,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:51,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:38:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:51,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:51,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:38:51,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:51,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 07:38:51,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:51,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:51,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:51,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:51,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:51,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:51,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 07:38:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:51,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:51,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:38:51,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 07:38:51,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:51,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:51,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:51,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:51,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:51,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 07:38:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:51,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:51,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:38:51,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:51,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 07:38:51,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:51,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:51,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:51,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:38:51,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:51,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2020-10-14 07:38:51,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049091948] [2020-10-14 07:38:51,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:51,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:38:51,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748807666] [2020-10-14 07:38:51,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:38:51,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:51,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:38:51,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:38:51,506 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 10 states. [2020-10-14 07:38:51,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:51,589 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2020-10-14 07:38:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:38:51,589 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-14 07:38:51,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:51,590 INFO L225 Difference]: With dead ends: 85 [2020-10-14 07:38:51,590 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 07:38:51,590 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 [2020-10-14 07:38:51,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 07:38:51,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-14 07:38:51,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 07:38:51,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-14 07:38:51,601 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 94 [2020-10-14 07:38:51,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:51,601 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-14 07:38:51,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:38:51,601 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-14 07:38:51,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 07:38:51,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:51,602 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 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] [2020-10-14 07:38:51,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 07:38:51,603 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:51,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:51,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1882123511, now seen corresponding path program 16 times [2020-10-14 07:38:51,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:51,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990450400] [2020-10-14 07:38:51,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:51,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:56,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:56,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 07:38:56,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:56,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 07:38:56,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:56,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:56,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:38:56,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:38:56,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:56,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:56,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:56,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:56,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:56,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:56,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:56,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:56,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:56,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:56,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:38:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:56,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:56,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:56,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:56,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:38:56,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:56,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 07:38:56,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:56,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:56,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:56,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:38:56,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:56,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:56,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 07:38:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:56,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:56,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:56,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:56,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:38:56,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:56,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 07:38:56,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:56,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:56,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:56,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:38:56,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:56,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:56,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 07:38:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:56,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:56,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:56,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:56,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:38:56,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:56,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 07:38:56,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:56,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:56,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:56,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:38:56,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:56,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-14 07:38:56,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990450400] [2020-10-14 07:38:56,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:56,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:38:56,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429644896] [2020-10-14 07:38:56,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:38:56,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:56,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:38:56,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:38:56,828 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 8 states. [2020-10-14 07:38:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:56,924 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2020-10-14 07:38:56,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:38:56,925 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-14 07:38:56,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:56,925 INFO L225 Difference]: With dead ends: 106 [2020-10-14 07:38:56,925 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 07:38:56,926 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 [2020-10-14 07:38:56,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 07:38:56,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-14 07:38:56,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 07:38:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-14 07:38:56,933 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 96 [2020-10-14 07:38:56,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:56,934 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-14 07:38:56,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:38:56,934 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-14 07:38:56,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 07:38:56,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:56,935 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 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] [2020-10-14 07:38:56,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 07:38:56,935 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:56,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:56,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1111292249, now seen corresponding path program 17 times [2020-10-14 07:38:56,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:56,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535999417] [2020-10-14 07:38:56,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:56,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:56,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:56,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:57,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:01,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:01,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 07:39:01,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:01,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 07:39:01,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:01,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:39:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 07:39:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:39:01,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:02,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:02,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:02,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:02,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:02,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:02,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:02,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:02,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:02,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:39:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:02,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:02,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:02,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:02,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 07:39:02,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:02,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:02,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:02,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:02,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:02,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:02,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 07:39:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:02,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:02,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:02,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:02,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 07:39:02,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:02,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:02,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:02,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 07:39:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:02,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:02,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:02,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:02,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 07:39:02,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:02,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:39:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:02,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2020-10-14 07:39:02,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535999417] [2020-10-14 07:39:02,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:02,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:39:02,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064730340] [2020-10-14 07:39:02,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:39:02,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:02,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:39:02,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:39:02,189 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2020-10-14 07:39:02,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:02,289 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-10-14 07:39:02,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:39:02,289 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-14 07:39:02,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:02,290 INFO L225 Difference]: With dead ends: 89 [2020-10-14 07:39:02,290 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 07:39:02,290 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 [2020-10-14 07:39:02,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 07:39:02,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-14 07:39:02,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 07:39:02,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-14 07:39:02,297 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-14 07:39:02,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:02,297 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-14 07:39:02,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:39:02,298 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-14 07:39:02,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 07:39:02,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:02,299 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 8, 8, 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] [2020-10-14 07:39:02,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 07:39:02,300 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:02,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:02,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1713191593, now seen corresponding path program 18 times [2020-10-14 07:39:02,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:02,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488415478] [2020-10-14 07:39:02,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:07,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:07,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 07:39:07,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:07,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 07:39:07,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:07,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:07,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:39:07,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 07:39:07,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:39:07,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:07,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:07,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:07,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:07,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:07,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:07,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:07,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:07,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:07,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:07,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:39:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:07,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:07,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:07,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:07,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:07,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 07:39:07,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:07,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:07,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:39:07,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:39:07,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:39:07,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:07,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 07:39:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:07,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:07,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:07,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:07,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:07,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:07,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 07:39:07,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:07,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:07,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:07,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:39:07,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:07,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:07,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 07:39:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:07,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:07,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:07,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:07,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:07,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:07,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 07:39:07,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:07,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:39:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:07,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-14 07:39:07,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488415478] [2020-10-14 07:39:07,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:07,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:39:07,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453869947] [2020-10-14 07:39:07,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:39:07,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:07,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:39:07,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:39:07,575 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-14 07:39:07,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:07,776 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2020-10-14 07:39:07,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:39:07,778 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 100 [2020-10-14 07:39:07,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:07,779 INFO L225 Difference]: With dead ends: 111 [2020-10-14 07:39:07,779 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 07:39:07,780 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 [2020-10-14 07:39:07,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 07:39:07,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-14 07:39:07,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 07:39:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-14 07:39:07,785 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 100 [2020-10-14 07:39:07,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:07,785 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-14 07:39:07,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:39:07,786 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-14 07:39:07,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 07:39:07,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:07,787 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 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] [2020-10-14 07:39:07,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 07:39:07,787 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:07,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:07,788 INFO L82 PathProgramCache]: Analyzing trace with hash -577108011, now seen corresponding path program 19 times [2020-10-14 07:39:07,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:07,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669551716] [2020-10-14 07:39:07,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:07,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:07,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:07,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:08,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:12,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:12,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 07:39:12,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:12,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 07:39:12,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:12,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:39:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:39:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:39:12,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:12,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:12,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:12,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:12,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:12,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:12,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:12,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:12,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:12,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:12,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:12,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:39:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:12,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:12,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:12,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:12,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:12,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:12,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 07:39:12,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:12,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:12,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:12,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:12,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:12,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:12,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 07:39:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:12,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:12,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:12,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:12,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:12,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:12,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 07:39:12,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:12,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:12,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:12,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 07:39:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:12,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:12,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:13,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:13,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:13,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:13,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 07:39:13,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:13,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:13,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:13,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-14 07:39:13,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669551716] [2020-10-14 07:39:13,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:13,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:39:13,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127540834] [2020-10-14 07:39:13,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:39:13,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:13,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:39:13,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:39:13,048 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 9 states. [2020-10-14 07:39:13,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:13,135 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-14 07:39:13,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:39:13,136 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-14 07:39:13,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:13,137 INFO L225 Difference]: With dead ends: 116 [2020-10-14 07:39:13,137 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 07:39:13,138 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 [2020-10-14 07:39:13,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 07:39:13,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-14 07:39:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 07:39:13,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-14 07:39:13,142 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 106 [2020-10-14 07:39:13,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:13,143 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-14 07:39:13,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:39:13,143 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-14 07:39:13,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 07:39:13,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:13,144 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 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] [2020-10-14 07:39:13,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 07:39:13,144 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:13,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:13,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1374322249, now seen corresponding path program 20 times [2020-10-14 07:39:13,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:13,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497628687] [2020-10-14 07:39:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:13,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:13,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:13,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:13,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:18,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:18,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 07:39:18,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:18,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 07:39:18,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:18,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:39:18,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 07:39:18,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:39:18,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:18,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:18,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:18,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:18,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:18,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:18,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:18,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:18,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:18,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:18,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:39:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:18,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:18,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:18,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:18,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:18,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:18,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 07:39:18,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:18,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:18,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:18,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 07:39:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:18,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:18,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:18,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:18,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:18,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:18,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 07:39:18,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:18,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:18,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:18,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:18,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:18,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:18,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 07:39:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:18,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:18,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:18,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:18,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:18,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 07:39:18,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:18,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:18,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:18,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:18,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2020-10-14 07:39:18,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497628687] [2020-10-14 07:39:18,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:18,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:39:18,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042908056] [2020-10-14 07:39:18,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:39:18,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:18,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:39:18,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:39:18,440 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2020-10-14 07:39:18,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:18,563 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-14 07:39:18,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:39:18,564 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-14 07:39:18,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:18,564 INFO L225 Difference]: With dead ends: 97 [2020-10-14 07:39:18,565 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 07:39:18,565 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 [2020-10-14 07:39:18,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 07:39:18,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-14 07:39:18,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 07:39:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-14 07:39:18,571 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-14 07:39:18,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:18,571 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-14 07:39:18,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:39:18,571 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-14 07:39:18,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 07:39:18,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:18,573 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 9, 9, 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] [2020-10-14 07:39:18,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 07:39:18,573 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:18,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:18,574 INFO L82 PathProgramCache]: Analyzing trace with hash -467689931, now seen corresponding path program 21 times [2020-10-14 07:39:18,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:18,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34717328] [2020-10-14 07:39:18,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:18,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:18,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:18,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:18,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:23,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:23,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 07:39:23,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:23,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 07:39:23,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:23,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:39:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 07:39:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:39:23,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:23,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:23,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:23,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:23,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:23,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:23,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:23,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:23,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:23,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:23,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:23,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:39:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:23,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:23,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:23,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:23,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:23,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:23,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 07:39:23,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:23,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:23,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:23,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:23,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:23,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:23,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 07:39:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:23,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:23,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:23,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:23,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:23,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:23,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 07:39:23,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:23,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:23,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:23,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 07:39:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:23,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:23,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:23,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:23,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:23,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:23,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 07:39:23,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:23,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:23,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2020-10-14 07:39:23,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34717328] [2020-10-14 07:39:23,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:23,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:39:23,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289645358] [2020-10-14 07:39:23,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:39:23,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:23,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:39:23,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:39:23,862 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-14 07:39:23,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:23,987 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2020-10-14 07:39:23,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:39:23,987 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 110 [2020-10-14 07:39:23,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:23,989 INFO L225 Difference]: With dead ends: 99 [2020-10-14 07:39:23,989 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 07:39:23,990 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 [2020-10-14 07:39:23,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 07:39:23,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-14 07:39:23,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 07:39:23,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-14 07:39:23,994 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 110 [2020-10-14 07:39:23,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:23,995 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-14 07:39:23,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:39:23,995 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-14 07:39:23,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 07:39:23,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:23,996 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 10, 10, 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] [2020-10-14 07:39:23,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 07:39:23,997 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:23,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:23,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1072393421, now seen corresponding path program 22 times [2020-10-14 07:39:23,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:23,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177829286] [2020-10-14 07:39:23,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:24,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:24,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:24,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:24,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:29,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 07:39:29,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:29,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 07:39:29,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:29,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:29,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:39:29,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 07:39:29,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:39:29,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:29,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:29,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:29,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:29,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:29,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:29,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:29,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:29,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:29,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:29,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:29,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:29,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:39:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:29,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:29,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:29,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:29,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 07:39:29,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:29,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:29,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:39:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:39:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:39:29,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:29,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 07:39:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:29,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:29,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:29,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:29,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 07:39:29,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:29,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:29,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:29,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 07:39:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:29,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:29,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:29,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:29,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 07:39:29,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:29,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:29,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:29,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:29,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2020-10-14 07:39:29,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177829286] [2020-10-14 07:39:29,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:29,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:39:29,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87547384] [2020-10-14 07:39:29,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:39:29,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:29,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:39:29,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:39:29,333 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-14 07:39:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:29,571 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2020-10-14 07:39:29,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:39:29,571 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-14 07:39:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:29,573 INFO L225 Difference]: With dead ends: 125 [2020-10-14 07:39:29,573 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 07:39:29,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-14 07:39:29,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 07:39:29,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-14 07:39:29,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 07:39:29,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-14 07:39:29,578 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-14 07:39:29,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:29,578 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-14 07:39:29,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:39:29,579 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-14 07:39:29,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 07:39:29,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:29,580 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 10, 10, 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] [2020-10-14 07:39:29,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 07:39:29,580 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:29,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:29,581 INFO L82 PathProgramCache]: Analyzing trace with hash 2003844785, now seen corresponding path program 23 times [2020-10-14 07:39:29,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:29,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888194028] [2020-10-14 07:39:29,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:29,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:34,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:34,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 07:39:34,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:34,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 07:39:34,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:34,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:39:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 07:39:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:39:34,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:34,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:34,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:34,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:34,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:34,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:34,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:34,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:34,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:34,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:34,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:39:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:34,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:34,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:34,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:34,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:39:34,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:34,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 07:39:34,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:34,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:34,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:34,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:34,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:34,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:34,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 07:39:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:34,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:34,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:34,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:39:34,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:34,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 07:39:34,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:34,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:34,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:39:34,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:39:34,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:39:34,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:34,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 07:39:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:34,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:34,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:34,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:34,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:39:34,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:34,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 07:39:34,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:34,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:34,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:34,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:39:34,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:34,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:34,875 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 184 proven. 265 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2020-10-14 07:39:34,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888194028] [2020-10-14 07:39:34,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:34,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:39:34,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291494079] [2020-10-14 07:39:34,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:39:34,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:34,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:39:34,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:39:34,877 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 13 states. [2020-10-14 07:39:35,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:35,122 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-10-14 07:39:35,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:39:35,122 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 118 [2020-10-14 07:39:35,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:35,123 INFO L225 Difference]: With dead ends: 129 [2020-10-14 07:39:35,123 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 07:39:35,125 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 [2020-10-14 07:39:35,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 07:39:35,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-14 07:39:35,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 07:39:35,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-14 07:39:35,135 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 118 [2020-10-14 07:39:35,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:35,135 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-14 07:39:35,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:39:35,136 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-14 07:39:35,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 07:39:35,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:35,137 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 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] [2020-10-14 07:39:35,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 07:39:35,137 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:35,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:35,137 INFO L82 PathProgramCache]: Analyzing trace with hash 695931823, now seen corresponding path program 24 times [2020-10-14 07:39:35,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:35,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603965848] [2020-10-14 07:39:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:35,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:40,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 07:39:40,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:40,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 07:39:40,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:40,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:39:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:39:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:39:40,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:40,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:40,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:40,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:40,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:40,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:40,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:40,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:40,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:40,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:40,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:40,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:40,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:39:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:40,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:40,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:40,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:40,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 07:39:40,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:40,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:40,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:40,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:40,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:40,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:40,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 07:39:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:40,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:40,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:40,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:40,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 07:39:40,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:40,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:40,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:40,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:40,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 07:39:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:40,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:40,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:40,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:40,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 07:39:40,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:40,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:40,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:40,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:40,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:40,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-14 07:39:40,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603965848] [2020-10-14 07:39:40,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:40,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:39:40,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275791125] [2020-10-14 07:39:40,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:39:40,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:40,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:39:40,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:39:40,453 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 10 states. [2020-10-14 07:39:40,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:40,565 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-10-14 07:39:40,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:39:40,566 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-10-14 07:39:40,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:40,566 INFO L225 Difference]: With dead ends: 134 [2020-10-14 07:39:40,567 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 07:39:40,567 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 [2020-10-14 07:39:40,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 07:39:40,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-14 07:39:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 07:39:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-14 07:39:40,577 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-14 07:39:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:40,578 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-14 07:39:40,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:39:40,578 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-14 07:39:40,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 07:39:40,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:40,580 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 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] [2020-10-14 07:39:40,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 07:39:40,580 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:40,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:40,581 INFO L82 PathProgramCache]: Analyzing trace with hash 164927761, now seen corresponding path program 25 times [2020-10-14 07:39:40,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:40,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405553138] [2020-10-14 07:39:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:40,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:41,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:45,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:45,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 07:39:45,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:45,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 07:39:45,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:45,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:39:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 07:39:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:39:45,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:45,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:45,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:45,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:45,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:45,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:45,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:45,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:45,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:45,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:45,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:39:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:45,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:45,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:45,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:45,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:45,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:45,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 07:39:45,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:45,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:45,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:45,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:45,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:45,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:45,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 07:39:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:45,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:45,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:45,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:45,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:45,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 07:39:45,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:45,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:45,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:39:45,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:39:45,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:39:45,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:45,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 07:39:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:45,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:45,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:45,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:45,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:45,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:45,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 07:39:45,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:45,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:45,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 224 proven. 324 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2020-10-14 07:39:45,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405553138] [2020-10-14 07:39:45,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:45,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 07:39:45,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328317795] [2020-10-14 07:39:45,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:39:45,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:45,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:39:45,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:39:45,932 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-10-14 07:39:46,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:46,209 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2020-10-14 07:39:46,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:39:46,210 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-14 07:39:46,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:46,211 INFO L225 Difference]: With dead ends: 135 [2020-10-14 07:39:46,212 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 07:39:46,213 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 [2020-10-14 07:39:46,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 07:39:46,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-14 07:39:46,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 07:39:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-14 07:39:46,218 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-14 07:39:46,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:46,219 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-14 07:39:46,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:39:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-14 07:39:46,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 07:39:46,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:46,220 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 10, 10, 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] [2020-10-14 07:39:46,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 07:39:46,220 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:46,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:46,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1086055951, now seen corresponding path program 26 times [2020-10-14 07:39:46,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:46,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720004681] [2020-10-14 07:39:46,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:46,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:46,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:46,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:46,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:51,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:51,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 07:39:51,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:51,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 07:39:51,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:51,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:39:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 07:39:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:39:51,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:51,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:51,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:51,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:51,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:51,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:51,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:51,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:51,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:51,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:51,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:51,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:51,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:51,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:39:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:51,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:51,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:51,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:51,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:39:51,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:51,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 07:39:51,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:51,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:51,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:51,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:51,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 07:39:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:51,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:51,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:51,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:51,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:39:51,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:51,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 07:39:51,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:51,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:51,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:51,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 07:39:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:51,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:51,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:51,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:51,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:39:51,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:51,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 07:39:51,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:51,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:51,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:51,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 07:39:51,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:51,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1219 trivial. 0 not checked. [2020-10-14 07:39:51,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720004681] [2020-10-14 07:39:51,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:51,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 07:39:51,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906349188] [2020-10-14 07:39:51,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:39:51,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:51,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:39:51,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:39:51,584 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 14 states. [2020-10-14 07:39:51,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:51,668 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-10-14 07:39:51,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:39:51,668 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-14 07:39:51,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:51,669 INFO L225 Difference]: With dead ends: 115 [2020-10-14 07:39:51,669 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 07:39:51,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:39:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 07:39:51,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-14 07:39:51,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 07:39:51,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-14 07:39:51,675 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 132 [2020-10-14 07:39:51,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:51,675 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-14 07:39:51,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:39:51,676 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-14 07:39:51,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 07:39:51,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:51,677 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 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] [2020-10-14 07:39:51,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 07:39:51,677 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:51,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:51,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1727718259, now seen corresponding path program 27 times [2020-10-14 07:39:51,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:51,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166374931] [2020-10-14 07:39:51,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:51,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:51,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:51,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:52,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:56,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:56,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 07:39:56,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:56,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 07:39:56,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:56,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:39:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:39:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:39:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:56,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:56,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:56,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:56,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:56,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:56,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:56,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:56,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:56,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:56,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:56,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:56,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:56,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:39:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:56,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:56,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:56,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:56,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:39:56,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:56,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 07:39:56,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:56,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:56,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:56,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 07:39:56,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:56,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:56,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 07:39:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:56,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:56,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:56,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:56,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:39:56,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:56,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 07:39:56,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:56,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:56,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 07:39:56,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:56,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:56,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 07:39:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:56,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:56,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:57,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:57,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:39:57,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:57,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 07:39:57,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:57,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 07:39:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:57,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-14 07:39:57,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166374931] [2020-10-14 07:39:57,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:57,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:39:57,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347582550] [2020-10-14 07:39:57,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:39:57,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:57,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:39:57,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:39:57,081 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 11 states. [2020-10-14 07:39:57,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:57,205 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2020-10-14 07:39:57,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:39:57,205 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-10-14 07:39:57,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:57,206 INFO L225 Difference]: With dead ends: 144 [2020-10-14 07:39:57,206 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 07:39:57,207 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 [2020-10-14 07:39:57,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 07:39:57,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-14 07:39:57,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 07:39:57,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-14 07:39:57,212 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 134 [2020-10-14 07:39:57,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:57,213 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-14 07:39:57,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:39:57,213 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-14 07:39:57,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 07:39:57,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:57,214 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 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] [2020-10-14 07:39:57,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 07:39:57,214 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:57,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:57,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1854459759, now seen corresponding path program 28 times [2020-10-14 07:39:57,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:57,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136862105] [2020-10-14 07:39:57,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:57,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:57,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:57,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:57,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:02,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:02,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 07:40:02,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:02,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 07:40:02,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:02,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:40:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 07:40:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 07:40:02,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:02,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:02,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:02,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:02,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:02,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:02,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:02,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:02,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:02,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:02,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:40:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:02,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:02,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:02,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:40:02,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:02,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 07:40:02,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:02,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:40:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:40:02,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 07:40:02,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:02,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 07:40:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:02,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:02,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:02,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:02,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:40:02,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:02,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 07:40:02,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:02,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:02,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:02,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 07:40:02,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:02,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:02,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 07:40:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:02,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:02,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:02,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:02,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:40:02,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:02,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 07:40:02,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:02,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 07:40:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:02,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:02,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 0 proven. 657 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2020-10-14 07:40:02,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136862105] [2020-10-14 07:40:02,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:02,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 07:40:02,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324004693] [2020-10-14 07:40:02,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 07:40:02,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:02,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 07:40:02,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:40:02,617 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 15 states. [2020-10-14 07:40:02,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:02,917 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2020-10-14 07:40:02,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 07:40:02,917 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-10-14 07:40:02,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:02,918 INFO L225 Difference]: With dead ends: 145 [2020-10-14 07:40:02,919 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 07:40:02,919 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 [2020-10-14 07:40:02,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 07:40:02,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-14 07:40:02,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 07:40:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-14 07:40:02,925 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 136 [2020-10-14 07:40:02,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:02,925 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-14 07:40:02,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 07:40:02,925 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-14 07:40:02,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 07:40:02,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:02,927 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 11, 11, 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] [2020-10-14 07:40:02,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 07:40:02,927 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:02,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:02,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1750809837, now seen corresponding path program 29 times [2020-10-14 07:40:02,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:02,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683689184] [2020-10-14 07:40:02,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:02,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:02,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:03,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:07,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:07,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 07:40:07,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:07,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 07:40:07,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:07,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:07,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:40:07,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 07:40:07,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:40:07,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:07,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:07,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:07,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:07,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:07,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:07,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:07,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:07,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:07,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:07,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:40:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:07,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:08,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:40:08,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:08,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 07:40:08,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:08,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:40:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:40:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:40:08,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:08,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 07:40:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:08,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:08,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:40:08,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:08,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 07:40:08,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:08,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:08,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:08,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:40:08,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:08,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:08,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 07:40:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:08,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:08,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:40:08,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:08,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 07:40:08,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:08,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:40:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:08,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 0 proven. 776 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2020-10-14 07:40:08,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683689184] [2020-10-14 07:40:08,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:08,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 07:40:08,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346497382] [2020-10-14 07:40:08,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 07:40:08,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:08,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 07:40:08,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 07:40:08,403 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 16 states. [2020-10-14 07:40:08,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:08,748 INFO L93 Difference]: Finished difference Result 149 states and 159 transitions. [2020-10-14 07:40:08,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 07:40:08,749 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 142 [2020-10-14 07:40:08,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:08,750 INFO L225 Difference]: With dead ends: 149 [2020-10-14 07:40:08,750 INFO L226 Difference]: Without dead ends: 88 [2020-10-14 07:40:08,751 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 [2020-10-14 07:40:08,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-14 07:40:08,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-14 07:40:08,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 07:40:08,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-14 07:40:08,760 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 142 [2020-10-14 07:40:08,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:08,761 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-14 07:40:08,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 07:40:08,761 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-14 07:40:08,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 07:40:08,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:08,762 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 11, 11, 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] [2020-10-14 07:40:08,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 07:40:08,763 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:08,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:08,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1792945173, now seen corresponding path program 30 times [2020-10-14 07:40:08,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:08,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175934476] [2020-10-14 07:40:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:08,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:13,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:13,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 07:40:13,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:13,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 07:40:13,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:13,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:40:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 07:40:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 07:40:13,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:13,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:13,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:13,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:13,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:13,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:13,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:13,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:13,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:13,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:13,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:13,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:13,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:13,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:40:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:13,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:13,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:14,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:14,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:14,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:14,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 07:40:14,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:14,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:14,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:14,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 07:40:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:14,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:14,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:14,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:14,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:14,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:14,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 07:40:14,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:14,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:14,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:14,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:14,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:14,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:14,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 07:40:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:14,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:14,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:14,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:14,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:14,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:14,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 07:40:14,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:14,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:14,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:40:14,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:14,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1799 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2020-10-14 07:40:14,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175934476] [2020-10-14 07:40:14,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:14,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 07:40:14,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135516591] [2020-10-14 07:40:14,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 07:40:14,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:14,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 07:40:14,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:40:14,207 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 15 states. [2020-10-14 07:40:14,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:14,298 INFO L93 Difference]: Finished difference Result 127 states and 132 transitions. [2020-10-14 07:40:14,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 07:40:14,299 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-14 07:40:14,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:14,300 INFO L225 Difference]: With dead ends: 127 [2020-10-14 07:40:14,300 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 07:40:14,301 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 [2020-10-14 07:40:14,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 07:40:14,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-14 07:40:14,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 07:40:14,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-14 07:40:14,306 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 148 [2020-10-14 07:40:14,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:14,307 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-14 07:40:14,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 07:40:14,307 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-14 07:40:14,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 07:40:14,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:14,308 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 12, 12, 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] [2020-10-14 07:40:14,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 07:40:14,308 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:14,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:14,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1894456471, now seen corresponding path program 31 times [2020-10-14 07:40:14,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:14,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591845170] [2020-10-14 07:40:14,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:14,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:14,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:14,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:14,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:19,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:19,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 07:40:19,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 07:40:19,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:19,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:40:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 07:40:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:40:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:19,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:19,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:19,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:19,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:19,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:19,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:19,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:19,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:19,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:19,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:40:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:19,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:19,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:19,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:19,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:19,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:19,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 07:40:19,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:19,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:19,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:19,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 07:40:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:19,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:19,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:19,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:19,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:19,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:19,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 07:40:19,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:19,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:19,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:19,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 07:40:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:19,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:19,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:19,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:19,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:19,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:19,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 07:40:19,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:19,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:40:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:19,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1822 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2020-10-14 07:40:19,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591845170] [2020-10-14 07:40:19,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:19,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 07:40:19,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606246690] [2020-10-14 07:40:19,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 07:40:19,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:19,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 07:40:19,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 07:40:19,776 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 16 states. [2020-10-14 07:40:19,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:19,921 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2020-10-14 07:40:19,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 07:40:19,922 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 150 [2020-10-14 07:40:19,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:19,923 INFO L225 Difference]: With dead ends: 129 [2020-10-14 07:40:19,923 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 07:40:19,924 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 [2020-10-14 07:40:19,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 07:40:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-14 07:40:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 07:40:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-14 07:40:19,930 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 150 [2020-10-14 07:40:19,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:19,931 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-14 07:40:19,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 07:40:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-14 07:40:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 07:40:19,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:19,932 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 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] [2020-10-14 07:40:19,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 07:40:19,933 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:19,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:19,933 INFO L82 PathProgramCache]: Analyzing trace with hash -662566041, now seen corresponding path program 32 times [2020-10-14 07:40:19,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:19,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893966415] [2020-10-14 07:40:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:19,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:19,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:19,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:20,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:24,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:24,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 07:40:24,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:24,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 07:40:24,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:24,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:24,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:40:24,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:40:24,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:40:24,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:25,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:25,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:25,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:25,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:25,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:25,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:25,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:25,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:25,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:25,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:40:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:25,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:25,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:25,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:25,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:25,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:25,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 07:40:25,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:25,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:25,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:25,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:40:25,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:25,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:25,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 07:40:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:25,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:25,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:25,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:25,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:25,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:25,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 07:40:25,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:25,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:25,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:25,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:40:25,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:25,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:25,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 07:40:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:25,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:25,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:25,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:25,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:25,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 07:40:25,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:25,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:40:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-14 07:40:25,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893966415] [2020-10-14 07:40:25,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:25,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:40:25,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906142007] [2020-10-14 07:40:25,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:40:25,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:25,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:40:25,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:40:25,324 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 12 states. [2020-10-14 07:40:25,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:25,421 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2020-10-14 07:40:25,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:40:25,422 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 152 [2020-10-14 07:40:25,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:25,423 INFO L225 Difference]: With dead ends: 162 [2020-10-14 07:40:25,423 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 07:40:25,424 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 [2020-10-14 07:40:25,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 07:40:25,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-14 07:40:25,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 07:40:25,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-14 07:40:25,429 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 152 [2020-10-14 07:40:25,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:25,429 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-14 07:40:25,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:40:25,430 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-14 07:40:25,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 07:40:25,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:25,431 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 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] [2020-10-14 07:40:25,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 07:40:25,431 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:25,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:25,432 INFO L82 PathProgramCache]: Analyzing trace with hash 2074577353, now seen corresponding path program 33 times [2020-10-14 07:40:25,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:25,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705667128] [2020-10-14 07:40:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:25,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:25,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:25,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:26,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:30,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:30,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 07:40:30,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:30,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 07:40:30,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:30,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:30,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:40:30,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 07:40:30,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:40:30,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:30,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:30,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:30,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:30,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:30,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:30,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:30,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:30,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:30,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:30,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:30,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:30,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:40:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:30,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:30,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:30,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:30,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:30,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 07:40:30,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:30,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:40:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:40:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:40:30,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:30,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 07:40:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:30,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:30,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:30,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:30,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:30,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:30,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 07:40:30,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:30,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:30,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:30,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:40:30,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:30,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:30,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 07:40:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:30,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:30,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:30,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:30,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:30,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:30,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 07:40:30,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:30,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:30,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:30,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:40:30,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:30,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:30,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 0 proven. 905 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2020-10-14 07:40:30,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705667128] [2020-10-14 07:40:30,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:30,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 07:40:30,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460422375] [2020-10-14 07:40:30,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 07:40:30,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:30,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 07:40:30,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:40:30,982 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 17 states. [2020-10-14 07:40:31,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:31,352 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2020-10-14 07:40:31,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 07:40:31,352 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2020-10-14 07:40:31,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:31,353 INFO L225 Difference]: With dead ends: 163 [2020-10-14 07:40:31,354 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 07:40:31,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-14 07:40:31,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 07:40:31,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-14 07:40:31,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 07:40:31,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-14 07:40:31,361 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 154 [2020-10-14 07:40:31,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:31,361 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-14 07:40:31,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 07:40:31,361 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-14 07:40:31,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-14 07:40:31,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:31,362 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 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] [2020-10-14 07:40:31,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 07:40:31,363 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:31,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:31,363 INFO L82 PathProgramCache]: Analyzing trace with hash 827214279, now seen corresponding path program 34 times [2020-10-14 07:40:31,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:31,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594406193] [2020-10-14 07:40:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:31,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:31,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:31,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:32,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:36,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:36,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 07:40:36,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:36,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-14 07:40:36,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:36,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:40:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 07:40:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:40:36,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:36,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:36,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:36,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:36,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:36,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:36,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:36,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:36,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:40:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:36,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:36,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:36,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:36,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:40:36,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:36,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 07:40:36,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:36,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:36,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:36,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:36,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:36,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:40:36,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 07:40:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:36,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:36,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:37,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:37,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:40:37,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:37,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-14 07:40:37,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:37,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:37,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:40:37,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 07:40:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:37,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:37,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:37,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:37,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:40:37,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:37,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 07:40:37,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:37,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:37,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:37,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:40:37,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:37,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1944 trivial. 0 not checked. [2020-10-14 07:40:37,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594406193] [2020-10-14 07:40:37,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:37,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 07:40:37,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404176193] [2020-10-14 07:40:37,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 07:40:37,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:37,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 07:40:37,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:40:37,285 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 17 states. [2020-10-14 07:40:37,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:37,495 INFO L93 Difference]: Finished difference Result 137 states and 142 transitions. [2020-10-14 07:40:37,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 07:40:37,496 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 160 [2020-10-14 07:40:37,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:37,497 INFO L225 Difference]: With dead ends: 137 [2020-10-14 07:40:37,498 INFO L226 Difference]: Without dead ends: 98 [2020-10-14 07:40:37,498 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 [2020-10-14 07:40:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-14 07:40:37,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-14 07:40:37,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 07:40:37,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-14 07:40:37,506 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 160 [2020-10-14 07:40:37,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:37,507 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-14 07:40:37,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 07:40:37,508 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-14 07:40:37,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 07:40:37,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:37,510 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 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] [2020-10-14 07:40:37,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 07:40:37,510 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:37,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:37,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1535622587, now seen corresponding path program 35 times [2020-10-14 07:40:37,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:37,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961363629] [2020-10-14 07:40:37,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:37,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:37,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:37,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:39,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:42,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:42,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 07:40:42,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5128 [2020-10-14 07:40:42,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:42,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:40:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:40:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:40:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:42,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:42,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:42,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:42,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:42,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:42,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:42,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:42,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:42,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:42,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:40:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:42,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:42,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:42,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:40:42,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:42,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 07:40:42,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:42,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:42,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:42,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:40:42,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:42,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:42,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 07:40:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:42,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:42,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:42,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:42,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:40:42,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:42,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 07:40:42,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:42,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:42,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:42,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:40:42,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:42,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:42,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 07:40:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:43,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:43,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:43,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:43,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:40:43,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:43,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 07:40:43,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:43,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:40:43,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:43,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2140 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-14 07:40:43,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961363629] [2020-10-14 07:40:43,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:43,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:40:43,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507555449] [2020-10-14 07:40:43,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:40:43,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:43,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:40:43,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:40:43,129 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 13 states. [2020-10-14 07:40:43,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:43,254 INFO L93 Difference]: Finished difference Result 172 states and 180 transitions. [2020-10-14 07:40:43,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:40:43,254 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-10-14 07:40:43,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:43,255 INFO L225 Difference]: With dead ends: 172 [2020-10-14 07:40:43,255 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 07:40:43,256 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 [2020-10-14 07:40:43,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 07:40:43,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-14 07:40:43,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 07:40:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-14 07:40:43,260 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 162 [2020-10-14 07:40:43,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:43,261 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-14 07:40:43,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:40:43,261 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-14 07:40:43,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 07:40:43,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:43,262 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 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] [2020-10-14 07:40:43,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 07:40:43,263 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:43,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:43,263 INFO L82 PathProgramCache]: Analyzing trace with hash -320557529, now seen corresponding path program 36 times [2020-10-14 07:40:43,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:43,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726856215] [2020-10-14 07:40:43,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:43,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:43,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:44,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:48,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 07:40:48,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:48,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-14 07:40:48,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:48,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:48,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:40:48,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 07:40:48,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 07:40:48,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:48,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:48,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:48,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:48,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:48,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:40:48,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:48,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:48,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:40:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:48,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:48,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:40:48,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:48,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 07:40:48,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:48,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:48,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:48,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:48,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:48,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:48,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 07:40:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:48,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:48,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:40:48,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:48,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 07:40:48,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:48,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:40:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:40:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 07:40:48,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:48,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 07:40:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:48,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:48,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:40:48,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:48,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 07:40:48,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:48,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:48,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:48,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:40:48,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:48,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2159 backedges. 424 proven. 620 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2020-10-14 07:40:48,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726856215] [2020-10-14 07:40:48,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:48,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 07:40:48,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698771142] [2020-10-14 07:40:48,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 07:40:48,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:48,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 07:40:48,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:40:48,862 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 18 states. [2020-10-14 07:40:49,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:49,258 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2020-10-14 07:40:49,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 07:40:49,259 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 164 [2020-10-14 07:40:49,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:49,260 INFO L225 Difference]: With dead ends: 173 [2020-10-14 07:40:49,260 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 07:40:49,262 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 [2020-10-14 07:40:49,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 07:40:49,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-14 07:40:49,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 07:40:49,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-14 07:40:49,268 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 164 [2020-10-14 07:40:49,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:49,268 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-14 07:40:49,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 07:40:49,268 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-14 07:40:49,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 07:40:49,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:49,269 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 14, 14, 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] [2020-10-14 07:40:49,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 07:40:49,270 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:49,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:49,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1082085029, now seen corresponding path program 37 times [2020-10-14 07:40:49,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:49,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877359636] [2020-10-14 07:40:49,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:49,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:49,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:49,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:50,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:54,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 07:40:54,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:54,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 07:40:54,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:54,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:40:54,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 07:40:54,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 07:40:54,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:54,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:54,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:54,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:54,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:54,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:54,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:54,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:54,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:54,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:40:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:54,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:54,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:40:54,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:54,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 07:40:54,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:54,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:54,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:54,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 07:40:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:54,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:54,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:40:54,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:54,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 07:40:54,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:54,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:54,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:54,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 07:40:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:54,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:54,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:40:54,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:54,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 07:40:54,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:54,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:54,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:54,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:40:54,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:54,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2426 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2230 trivial. 0 not checked. [2020-10-14 07:40:54,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877359636] [2020-10-14 07:40:54,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:54,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 07:40:54,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998777687] [2020-10-14 07:40:54,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 07:40:54,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:54,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 07:40:54,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:40:54,901 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 18 states. [2020-10-14 07:40:55,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:55,049 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2020-10-14 07:40:55,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 07:40:55,049 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 170 [2020-10-14 07:40:55,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:55,050 INFO L225 Difference]: With dead ends: 145 [2020-10-14 07:40:55,051 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 07:40:55,051 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 [2020-10-14 07:40:55,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 07:40:55,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-14 07:40:55,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 07:40:55,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-14 07:40:55,064 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 170 [2020-10-14 07:40:55,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:55,065 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-14 07:40:55,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 07:40:55,065 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-14 07:40:55,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 07:40:55,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:55,066 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 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] [2020-10-14 07:40:55,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 07:40:55,067 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:55,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:55,067 INFO L82 PathProgramCache]: Analyzing trace with hash -763594845, now seen corresponding path program 38 times [2020-10-14 07:40:55,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:55,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162855471] [2020-10-14 07:40:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:55,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:55,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:55,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:56,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:00,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 07:41:00,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:41:00,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-14 07:41:00,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:00,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:00,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:41:00,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:41:00,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:41:00,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:00,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:00,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:00,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:00,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:00,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:00,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:00,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:00,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:00,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:00,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:41:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:00,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:00,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:00,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:00,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 07:41:00,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:00,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:00,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:00,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:41:00,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:00,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:00,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 07:41:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:00,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:00,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:00,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:00,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 07:41:00,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:00,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:00,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:00,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:41:00,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:00,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:00,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 07:41:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:00,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:00,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:00,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:00,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 07:41:00,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:00,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:00,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:00,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:41:00,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:00,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2455 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-14 07:41:00,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162855471] [2020-10-14 07:41:00,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:00,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 07:41:00,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470062267] [2020-10-14 07:41:00,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:41:00,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:00,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:41:00,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:41:00,686 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 14 states. [2020-10-14 07:41:00,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:00,813 INFO L93 Difference]: Finished difference Result 182 states and 190 transitions. [2020-10-14 07:41:00,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:41:00,813 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 172 [2020-10-14 07:41:00,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:00,814 INFO L225 Difference]: With dead ends: 182 [2020-10-14 07:41:00,814 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 07:41:00,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:41:00,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 07:41:00,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-14 07:41:00,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 07:41:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-14 07:41:00,823 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 172 [2020-10-14 07:41:00,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:00,823 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-14 07:41:00,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:41:00,823 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-14 07:41:00,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 07:41:00,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:00,825 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 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] [2020-10-14 07:41:00,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 07:41:00,825 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:00,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:00,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1937444603, now seen corresponding path program 39 times [2020-10-14 07:41:00,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:00,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153614015] [2020-10-14 07:41:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:02,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:05,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:05,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 07:41:05,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:41:05,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 07:41:05,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:05,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:05,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 07:41:05,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 07:41:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 07:41:05,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:06,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:06,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:06,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:06,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:06,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:06,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:06,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:06,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:06,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:06,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:06,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:06,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:41:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:06,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:06,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:06,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:06,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 07:41:06,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:06,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:06,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:06,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:06,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:06,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:06,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 07:41:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:06,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:06,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:06,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:06,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 07:41:06,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:06,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:06,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:06,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:06,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:06,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:06,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 07:41:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:06,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:06,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:06,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 07:41:06,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:06,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:06,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:06,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:41:06,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:06,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:06,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2251 trivial. 0 not checked. [2020-10-14 07:41:06,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153614015] [2020-10-14 07:41:06,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:06,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 07:41:06,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710656667] [2020-10-14 07:41:06,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 07:41:06,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:06,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 07:41:06,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 07:41:06,493 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 19 states. [2020-10-14 07:41:06,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:06,676 INFO L93 Difference]: Finished difference Result 149 states and 154 transitions. [2020-10-14 07:41:06,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 07:41:06,676 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 174 [2020-10-14 07:41:06,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:06,678 INFO L225 Difference]: With dead ends: 149 [2020-10-14 07:41:06,678 INFO L226 Difference]: Without dead ends: 108 [2020-10-14 07:41:06,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 07:41:06,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-14 07:41:06,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-14 07:41:06,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 07:41:06,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-14 07:41:06,687 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 174 [2020-10-14 07:41:06,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:06,689 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-14 07:41:06,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 07:41:06,689 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-14 07:41:06,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-14 07:41:06,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:06,691 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 16, 16, 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] [2020-10-14 07:41:06,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 07:41:06,691 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:06,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:06,691 INFO L82 PathProgramCache]: Analyzing trace with hash 866320899, now seen corresponding path program 40 times [2020-10-14 07:41:06,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:06,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219399249] [2020-10-14 07:41:06,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:06,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:08,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:11,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:11,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 07:41:11,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:41:11,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-14 07:41:11,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:11,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:11,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 07:41:11,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 07:41:11,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 07:41:11,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:11,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:11,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:11,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:11,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:11,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:11,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:11,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:11,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:11,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:11,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:11,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:11,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:41:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:11,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:11,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:12,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:12,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:12,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:12,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 07:41:12,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:12,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:12,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:12,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 07:41:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:12,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:12,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:12,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:12,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:12,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:12,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 07:41:12,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:12,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:12,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:12,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:12,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 07:41:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:12,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:12,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:12,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:12,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:12,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:12,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 07:41:12,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:12,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:41:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:12,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:12,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2507 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 2251 trivial. 0 not checked. [2020-10-14 07:41:12,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219399249] [2020-10-14 07:41:12,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:12,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 07:41:12,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252558879] [2020-10-14 07:41:12,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 07:41:12,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:12,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 07:41:12,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 07:41:12,401 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 20 states. [2020-10-14 07:41:12,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:12,551 INFO L93 Difference]: Finished difference Result 151 states and 156 transitions. [2020-10-14 07:41:12,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 07:41:12,551 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 176 [2020-10-14 07:41:12,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:12,553 INFO L225 Difference]: With dead ends: 151 [2020-10-14 07:41:12,553 INFO L226 Difference]: Without dead ends: 110 [2020-10-14 07:41:12,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 07:41:12,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-14 07:41:12,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-14 07:41:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 07:41:12,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-14 07:41:12,559 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 176 [2020-10-14 07:41:12,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:12,559 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-14 07:41:12,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 07:41:12,559 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-14 07:41:12,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 07:41:12,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:12,562 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 17, 17, 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] [2020-10-14 07:41:12,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 07:41:12,563 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:12,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:12,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1954493567, now seen corresponding path program 41 times [2020-10-14 07:41:12,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:12,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269191789] [2020-10-14 07:41:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:12,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:12,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:12,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:12,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:17,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:17,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 07:41:17,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:41:17,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 07:41:17,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:17,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 07:41:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 07:41:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 07:41:17,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:17,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:17,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:17,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:17,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:17,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:17,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:17,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:17,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:17,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:17,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:41:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:17,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:17,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:17,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:17,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:17,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 07:41:17,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:17,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 07:41:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:41:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 07:41:17,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:17,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 07:41:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:17,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:17,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:18,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:18,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:18,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:18,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 07:41:18,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:18,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:41:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:18,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:18,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 07:41:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:18,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:18,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:18,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:18,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:18,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 07:41:18,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:18,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:41:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 0 proven. 1193 refuted. 0 times theorem prover too weak. 1347 trivial. 0 not checked. [2020-10-14 07:41:18,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269191789] [2020-10-14 07:41:18,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:18,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 07:41:18,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635338266] [2020-10-14 07:41:18,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 07:41:18,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:18,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 07:41:18,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 07:41:18,191 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 19 states.