/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/mapsum4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 17:35:58,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 17:35:58,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 17:35:58,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 17:35:58,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 17:35:58,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 17:35:58,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 17:35:58,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 17:35:58,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 17:35:58,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 17:35:58,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 17:35:58,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 17:35:58,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 17:35:58,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 17:35:58,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 17:35:58,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 17:35:58,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 17:35:58,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 17:35:58,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 17:35:58,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 17:35:58,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 17:35:58,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 17:35:58,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 17:35:58,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 17:35:58,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 17:35:58,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 17:35:58,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 17:35:58,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 17:35:58,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 17:35:58,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 17:35:58,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 17:35:58,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 17:35:58,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 17:35:58,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 17:35:58,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 17:35:58,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 17:35:58,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 17:35:58,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 17:35:58,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 17:35:58,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 17:35:58,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 17:35:58,181 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 17:35:58,203 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 17:35:58,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 17:35:58,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 17:35:58,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 17:35:58,205 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 17:35:58,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 17:35:58,206 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 17:35:58,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 17:35:58,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 17:35:58,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 17:35:58,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 17:35:58,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 17:35:58,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 17:35:58,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 17:35:58,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 17:35:58,207 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 17:35:58,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 17:35:58,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 17:35:58,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 17:35:58,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 17:35:58,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 17:35:58,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:35:58,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 17:35:58,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 17:35:58,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 17:35:58,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 17:35:58,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 17:35:58,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 17:35:58,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 17:35:58,210 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 17:35:58,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 17:35:58,536 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 17:35:58,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 17:35:58,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 17:35:58,541 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 17:35:58,542 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum4.i [2020-10-14 17:35:58,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88f3dc64f/4227d8964c8f45ad96eec853356bb03c/FLAGae82daec2 [2020-10-14 17:35:58,989 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 17:35:58,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapsum4.i [2020-10-14 17:35:58,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88f3dc64f/4227d8964c8f45ad96eec853356bb03c/FLAGae82daec2 [2020-10-14 17:35:59,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88f3dc64f/4227d8964c8f45ad96eec853356bb03c [2020-10-14 17:35:59,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 17:35:59,390 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 17:35:59,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 17:35:59,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 17:35:59,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 17:35:59,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:35:59" (1/1) ... [2020-10-14 17:35:59,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7184f8b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:59, skipping insertion in model container [2020-10-14 17:35:59,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:35:59" (1/1) ... [2020-10-14 17:35:59,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 17:35:59,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 17:35:59,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:35:59,615 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 17:35:59,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:35:59,652 INFO L208 MainTranslator]: Completed translation [2020-10-14 17:35:59,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:59 WrapperNode [2020-10-14 17:35:59,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 17:35:59,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 17:35:59,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 17:35:59,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 17:35:59,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:59" (1/1) ... [2020-10-14 17:35:59,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:59" (1/1) ... [2020-10-14 17:35:59,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:59" (1/1) ... [2020-10-14 17:35:59,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:59" (1/1) ... [2020-10-14 17:35:59,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:59" (1/1) ... [2020-10-14 17:35:59,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:59" (1/1) ... [2020-10-14 17:35:59,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:59" (1/1) ... [2020-10-14 17:35:59,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 17:35:59,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 17:35:59,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 17:35:59,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 17:35:59,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:59" (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 17:35:59,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 17:35:59,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 17:35:59,860 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2020-10-14 17:35:59,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 17:35:59,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 17:35:59,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 17:35:59,860 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2020-10-14 17:35:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 17:35:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 17:35:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 17:35:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 17:35:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 17:35:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 17:35:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 17:36:00,099 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 17:36:00,100 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 17:36:00,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:36:00 BoogieIcfgContainer [2020-10-14 17:36:00,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 17:36:00,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 17:36:00,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 17:36:00,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 17:36:00,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:35:59" (1/3) ... [2020-10-14 17:36:00,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2dbcb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:36:00, skipping insertion in model container [2020-10-14 17:36:00,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:59" (2/3) ... [2020-10-14 17:36:00,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2dbcb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:36:00, skipping insertion in model container [2020-10-14 17:36:00,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:36:00" (3/3) ... [2020-10-14 17:36:00,112 INFO L109 eAbstractionObserver]: Analyzing ICFG mapsum4.i [2020-10-14 17:36:00,123 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 17:36:00,130 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 17:36:00,159 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 17:36:00,215 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 17:36:00,215 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 17:36:00,216 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 17:36:00,216 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 17:36:00,216 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 17:36:00,216 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 17:36:00,217 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 17:36:00,223 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 17:36:00,248 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-14 17:36:00,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 17:36:00,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:00,255 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 17:36:00,255 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:00,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:00,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-14 17:36:00,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:00,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954878768] [2020-10-14 17:36:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:00,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:00,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:00,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:00,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:00,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:01,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:01,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:01,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 17:36:01,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 17:36:01,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1313 [2020-10-14 17:36:01,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:01,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:01,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:36:01,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:36:01,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 17:36:01,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 17:36:01,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:01,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:02,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:02,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:02,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:02,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:36:02,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:02,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:02,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:02,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:02,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:02,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:02,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:02,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:02,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:02,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:02,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:36:02,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:02,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 17:36:02,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:02,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:36:02,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:02,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:36:02,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:02,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 17:36:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:02,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:02,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:02,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:02,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:36:02,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:02,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 17:36:02,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:02,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:02,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:36:02,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:02,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:36:02,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:02,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 17:36:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:02,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:02,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:02,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:02,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:36:02,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:02,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 17:36:02,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:02,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:02,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:36:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:36:02,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:36:02,302 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 17:36:02,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954878768] [2020-10-14 17:36:02,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:36:02,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 17:36:02,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322523371] [2020-10-14 17:36:02,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 17:36:02,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:02,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 17:36:02,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:36:02,335 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 11 states. [2020-10-14 17:36:02,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:02,709 INFO L93 Difference]: Finished difference Result 83 states and 120 transitions. [2020-10-14 17:36:02,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 17:36:02,712 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-14 17:36:02,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:02,723 INFO L225 Difference]: With dead ends: 83 [2020-10-14 17:36:02,724 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 17:36:02,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:36:02,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 17:36:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-10-14 17:36:02,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 17:36:02,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2020-10-14 17:36:02,781 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 32 [2020-10-14 17:36:02,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:02,781 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2020-10-14 17:36:02,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 17:36:02,782 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2020-10-14 17:36:02,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 17:36:02,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:02,784 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, 1, 1] [2020-10-14 17:36:02,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 17:36:02,785 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:02,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:02,786 INFO L82 PathProgramCache]: Analyzing trace with hash -883673527, now seen corresponding path program 1 times [2020-10-14 17:36:02,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:02,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211715290] [2020-10-14 17:36:02,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:02,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:02,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:02,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:02,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:02,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:03,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:03,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 17:36:03,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:36:03,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 847 [2020-10-14 17:36:03,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:03,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:03,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:36:03,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 17:36:03,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:36:03,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:03,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:03,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:03,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:03,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:03,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:36:03,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:03,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:03,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:03,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:03,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:03,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:03,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:03,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:03,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:03,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:03,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:36:03,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:03,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 17:36:03,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:03,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:03,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:36:03,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:03,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:36:03,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:03,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 17:36:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:03,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:03,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:03,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:03,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:36:03,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:03,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 17:36:03,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:03,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:03,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:36:03,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:03,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:36:03,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:03,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 17:36:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:03,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:03,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:03,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:36:03,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:03,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 17:36:03,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:03,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:03,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:36:03,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:36:03,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 17:36:03,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211715290] [2020-10-14 17:36:03,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:03,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 17:36:03,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435785847] [2020-10-14 17:36:03,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:36:03,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:03,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:36:03,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:36:03,730 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 5 states. [2020-10-14 17:36:03,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:03,832 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-10-14 17:36:03,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 17:36:03,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-14 17:36:03,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:03,834 INFO L225 Difference]: With dead ends: 58 [2020-10-14 17:36:03,834 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 17:36:03,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 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 17:36:03,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 17:36:03,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-14 17:36:03,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 17:36:03,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-14 17:36:03,842 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-14 17:36:03,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:03,842 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-14 17:36:03,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:36:03,843 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-14 17:36:03,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 17:36:03,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:03,844 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] [2020-10-14 17:36:03,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 17:36:03,845 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:03,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:03,845 INFO L82 PathProgramCache]: Analyzing trace with hash -919236729, now seen corresponding path program 2 times [2020-10-14 17:36:03,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:03,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886855378] [2020-10-14 17:36:03,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:03,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:03,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:03,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:03,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:04,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:08,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:08,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:08,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 17:36:08,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 17:36:08,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 17:36:08,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:08,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:36:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 17:36:08,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 17:36:08,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:09,615 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2020-10-14 17:36:09,766 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-10-14 17:36:09,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:09,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:09,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:09,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:09,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:09,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:36:09,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:09,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:09,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:09,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:09,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:09,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:09,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:09,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:10,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:10,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:36:10,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:10,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-14 17:36:10,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:10,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:36:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:36:10,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:10,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 17:36:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:10,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:11,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:11,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:36:11,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:11,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 754 [2020-10-14 17:36:11,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:11,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:11,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:36:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:36:11,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:36:11,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:36:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:11,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:11,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:11,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:11,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:36:11,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:11,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-14 17:36:11,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:11,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:11,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:36:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:36:11,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:12,012 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 17:36:12,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886855378] [2020-10-14 17:36:12,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:12,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 17:36:12,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022086205] [2020-10-14 17:36:12,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 17:36:12,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:12,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 17:36:12,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:36:12,017 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 17 states. [2020-10-14 17:36:13,517 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-14 17:36:13,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:13,700 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-10-14 17:36:13,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:36:13,701 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2020-10-14 17:36:13,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:13,703 INFO L225 Difference]: With dead ends: 56 [2020-10-14 17:36:13,703 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 17:36:13,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:36:13,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 17:36:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-10-14 17:36:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 17:36:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-10-14 17:36:13,729 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 44 [2020-10-14 17:36:13,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:13,729 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-14 17:36:13,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 17:36:13,730 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2020-10-14 17:36:13,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 17:36:13,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:13,734 INFO L422 BasicCegarLoop]: trace histogram [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 17:36:13,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 17:36:13,736 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:13,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:13,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1711204411, now seen corresponding path program 3 times [2020-10-14 17:36:13,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:13,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291660314] [2020-10-14 17:36:13,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:13,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:13,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:13,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:13,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:14,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:18,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:18,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 17:36:18,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:36:18,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 17:36:18,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:18,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:18,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:36:18,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 17:36:18,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:36:18,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:18,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:18,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:18,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:18,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:18,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:18,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:18,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:18,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 17:36:18,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:18,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:18,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:18,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:18,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:36:18,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:18,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 17:36:18,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:18,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:18,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:36:18,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:18,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:36:18,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:18,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 17:36:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:18,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:18,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:18,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:18,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:36:18,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:18,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 17:36:18,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:18,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:36:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:36:18,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:18,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:36:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:18,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:18,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:18,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:36:18,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:18,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 17:36:18,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:18,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:36:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:36:18,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:18,892 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 17:36:18,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291660314] [2020-10-14 17:36:18,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:18,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 17:36:18,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382164673] [2020-10-14 17:36:18,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 17:36:18,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:18,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 17:36:18,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:36:18,896 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 7 states. [2020-10-14 17:36:19,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:19,026 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2020-10-14 17:36:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 17:36:19,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-14 17:36:19,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:19,028 INFO L225 Difference]: With dead ends: 65 [2020-10-14 17:36:19,028 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 17:36:19,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 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 17:36:19,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 17:36:19,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 17:36:19,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 17:36:19,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-14 17:36:19,038 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-14 17:36:19,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:19,040 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-14 17:36:19,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 17:36:19,040 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-14 17:36:19,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 17:36:19,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:19,043 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:36:19,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 17:36:19,046 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:19,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:19,047 INFO L82 PathProgramCache]: Analyzing trace with hash 79349251, now seen corresponding path program 4 times [2020-10-14 17:36:19,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:19,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837039912] [2020-10-14 17:36:19,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:19,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:19,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:19,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:20,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:24,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:24,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:36:24,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:36:24,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 17:36:24,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:24,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:36:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 17:36:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:36:24,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:24,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:24,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:24,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:24,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:24,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:24,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:24,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:24,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:24,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:24,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:24,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:24,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:24,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:24,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:24,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:24,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:24,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 17:36:24,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:24,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 17:36:24,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:24,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:36:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:36:24,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:24,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 17:36:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:24,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:24,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:24,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:24,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 17:36:24,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:24,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 17:36:24,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:24,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:36:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:36:24,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:24,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:36:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:24,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:24,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:24,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 17:36:24,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:24,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 17:36:24,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:24,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:36:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:36:24,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:24,222 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 17:36:24,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837039912] [2020-10-14 17:36:24,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:24,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 17:36:24,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739461249] [2020-10-14 17:36:24,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 17:36:24,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:24,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 17:36:24,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 17:36:24,225 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-14 17:36:24,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:24,384 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-14 17:36:24,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 17:36:24,384 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-14 17:36:24,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:24,386 INFO L225 Difference]: With dead ends: 60 [2020-10-14 17:36:24,386 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 17:36:24,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 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 17:36:24,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 17:36:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-14 17:36:24,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 17:36:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-14 17:36:24,399 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2020-10-14 17:36:24,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:24,400 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-14 17:36:24,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 17:36:24,401 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-14 17:36:24,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 17:36:24,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:24,402 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 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 17:36:24,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 17:36:24,402 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:24,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:24,403 INFO L82 PathProgramCache]: Analyzing trace with hash -754016383, now seen corresponding path program 5 times [2020-10-14 17:36:24,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:24,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985162395] [2020-10-14 17:36:24,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:24,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:24,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:24,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:27,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:27,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:29,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:29,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 17:36:29,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 17:36:29,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 17:36:29,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:29,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:29,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-14 17:36:29,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 17:36:29,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 17:36:29,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:30,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:30,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:30,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:30,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:30,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:30,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:36:30,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:30,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:30,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 17:36:30,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:30,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:30,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:30,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:30,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 17:36:30,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:30,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-14 17:36:30,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:30,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:30,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:36:30,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:30,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:36:30,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:31,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 17:36:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:31,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:31,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:32,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:32,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 17:36:32,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:32,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-14 17:36:32,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:32,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:36:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:36:32,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:32,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:36:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:32,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:32,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:33,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:33,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 17:36:33,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:33,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-14 17:36:33,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:33,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:36:33,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:33,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:36:33,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:33,738 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-14 17:36:33,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985162395] [2020-10-14 17:36:33,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:33,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 17:36:33,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108013252] [2020-10-14 17:36:33,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 17:36:33,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:33,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 17:36:33,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-14 17:36:33,741 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 20 states. [2020-10-14 17:36:35,224 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-14 17:36:35,813 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-10-14 17:36:36,620 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-14 17:36:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:36,986 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2020-10-14 17:36:36,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 17:36:36,986 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 62 [2020-10-14 17:36:36,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:36,988 INFO L225 Difference]: With dead ends: 62 [2020-10-14 17:36:36,988 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 17:36:36,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 17:36:36,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 17:36:36,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2020-10-14 17:36:36,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 17:36:36,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-10-14 17:36:36,999 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 62 [2020-10-14 17:36:36,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:37,000 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-10-14 17:36:37,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 17:36:37,000 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-10-14 17:36:37,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 17:36:37,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:37,003 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 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 17:36:37,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 17:36:37,004 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:37,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:37,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1848241857, now seen corresponding path program 6 times [2020-10-14 17:36:37,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:37,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830086697] [2020-10-14 17:36:37,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:37,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:37,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:37,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:37,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:40,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:42,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:42,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 17:36:42,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:36:42,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:36:42,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:42,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:42,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:36:42,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:36:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:36:42,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:42,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:42,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:42,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:42,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:42,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:42,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:42,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:42,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:42,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:42,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:42,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:42,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:42,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:42,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:42,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:42,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 17:36:42,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:42,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 17:36:42,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:42,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:42,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:36:42,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:42,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:36:42,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:42,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 17:36:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:42,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:42,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:42,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:42,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 17:36:42,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:42,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 17:36:42,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:42,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:36:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:36:42,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:42,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:36:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:42,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:42,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:42,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:42,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 17:36:42,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:42,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 17:36:42,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:42,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:36:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:36:42,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 75 proven. 183 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-14 17:36:42,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830086697] [2020-10-14 17:36:42,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:42,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 17:36:42,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532615489] [2020-10-14 17:36:42,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 17:36:42,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:42,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 17:36:42,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:36:42,245 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 10 states. [2020-10-14 17:36:42,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:42,445 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-10-14 17:36:42,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 17:36:42,446 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 64 [2020-10-14 17:36:42,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:42,447 INFO L225 Difference]: With dead ends: 77 [2020-10-14 17:36:42,447 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 17:36:42,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 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 17:36:42,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 17:36:42,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-14 17:36:42,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 17:36:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-14 17:36:42,453 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-14 17:36:42,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:42,454 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-14 17:36:42,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 17:36:42,454 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-14 17:36:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 17:36:42,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:42,455 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 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 17:36:42,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 17:36:42,456 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:42,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:42,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1267511037, now seen corresponding path program 7 times [2020-10-14 17:36:42,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:42,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601212933] [2020-10-14 17:36:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:42,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:42,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:42,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:42,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:46,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:47,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:47,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 17:36:47,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:36:47,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 17:36:47,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:47,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:36:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 17:36:47,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:36:47,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:47,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:47,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:47,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:47,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:47,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:47,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:47,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:47,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:47,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:47,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:47,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:47,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:47,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:47,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 17:36:47,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:47,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 17:36:47,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:47,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:47,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:36:47,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:47,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:36:47,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:47,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 17:36:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:47,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:47,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:47,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:47,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 17:36:47,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:47,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 17:36:47,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:47,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:47,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:36:47,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:47,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:36:47,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:47,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:36:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:47,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:47,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:47,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 17:36:47,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:47,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 17:36:47,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:47,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:36:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:36:47,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:47,709 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-14 17:36:47,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601212933] [2020-10-14 17:36:47,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:47,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 17:36:47,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415773730] [2020-10-14 17:36:47,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 17:36:47,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:47,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 17:36:47,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:36:47,711 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 11 states. [2020-10-14 17:36:47,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:47,944 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-14 17:36:47,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 17:36:47,944 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-14 17:36:47,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:47,945 INFO L225 Difference]: With dead ends: 72 [2020-10-14 17:36:47,945 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 17:36:47,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 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 17:36:47,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 17:36:47,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-14 17:36:47,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 17:36:47,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-14 17:36:47,952 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 74 [2020-10-14 17:36:47,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:47,952 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-14 17:36:47,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 17:36:47,952 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-14 17:36:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 17:36:47,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:47,954 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 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 17:36:47,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 17:36:47,954 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:47,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:47,957 INFO L82 PathProgramCache]: Analyzing trace with hash 303277307, now seen corresponding path program 8 times [2020-10-14 17:36:47,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:47,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004435063] [2020-10-14 17:36:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:47,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:47,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:47,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:48,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:52,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:52,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 17:36:52,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:36:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 17:36:52,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:52,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:36:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:36:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:36:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:52,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:52,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:52,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:52,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:52,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:52,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:52,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:52,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:52,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:52,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:52,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:52,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:52,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:53,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:53,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 17:36:53,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:53,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 17:36:53,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:53,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:53,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:36:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:36:53,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:53,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:36:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:53,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:53,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:53,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:53,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 17:36:53,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:53,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 17:36:53,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:53,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:53,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:36:53,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:53,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:36:53,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:53,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:36:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:53,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:53,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:53,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:53,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 17:36:53,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:53,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 17:36:53,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:53,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:53,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:36:53,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:53,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:36:53,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-14 17:36:53,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004435063] [2020-10-14 17:36:53,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:53,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 17:36:53,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178777327] [2020-10-14 17:36:53,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 17:36:53,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:53,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 17:36:53,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:36:53,231 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2020-10-14 17:36:53,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:53,492 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-14 17:36:53,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 17:36:53,493 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-14 17:36:53,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:53,494 INFO L225 Difference]: With dead ends: 76 [2020-10-14 17:36:53,495 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 17:36:53,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:36:53,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 17:36:53,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-14 17:36:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 17:36:53,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-14 17:36:53,501 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 80 [2020-10-14 17:36:53,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:53,502 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-14 17:36:53,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 17:36:53,502 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-14 17:36:53,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 17:36:53,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:53,503 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 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 17:36:53,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 17:36:53,503 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:53,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:53,504 INFO L82 PathProgramCache]: Analyzing trace with hash 439379065, now seen corresponding path program 9 times [2020-10-14 17:36:53,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:53,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752689507] [2020-10-14 17:36:53,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:53,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:53,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:53,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:53,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:58,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:58,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 17:36:58,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:36:58,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:36:58,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:58,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:36:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:36:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:36:58,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:58,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:58,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:58,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:58,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:58,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:58,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:58,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:58,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:58,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:58,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:58,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:58,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:58,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:58,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:58,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:58,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 17:36:58,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:58,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 17:36:58,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:58,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:58,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:36:58,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:58,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:36:58,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:58,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 17:36:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:58,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:58,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:58,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:58,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 17:36:58,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:58,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 17:36:58,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:58,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:36:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:58,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:36:58,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:58,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:36:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:58,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:58,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:58,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:58,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 17:36:58,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:58,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 17:36:58,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:58,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:36:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:36:58,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:58,817 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 17:36:58,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752689507] [2020-10-14 17:36:58,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:58,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 17:36:58,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278451002] [2020-10-14 17:36:58,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 17:36:58,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:58,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 17:36:58,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:36:58,819 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-14 17:36:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:59,114 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-14 17:36:59,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 17:36:59,115 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-14 17:36:59,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:59,116 INFO L225 Difference]: With dead ends: 80 [2020-10-14 17:36:59,116 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 17:36:59,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 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 17:36:59,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 17:36:59,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-14 17:36:59,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 17:36:59,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-14 17:36:59,127 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 86 [2020-10-14 17:36:59,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:59,127 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-14 17:36:59,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 17:36:59,127 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-14 17:36:59,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 17:36:59,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:59,128 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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 17:36:59,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 17:36:59,128 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:59,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:59,129 INFO L82 PathProgramCache]: Analyzing trace with hash -825406089, now seen corresponding path program 10 times [2020-10-14 17:36:59,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:59,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122452590] [2020-10-14 17:36:59,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:59,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:59,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:59,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:59,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:04,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:04,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 17:37:04,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:04,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 17:37:04,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:04,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:37:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 17:37:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:37:04,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:04,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:04,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:04,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:04,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:04,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:04,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:04,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:04,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:04,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:04,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:04,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:04,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:04,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:04,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:04,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:04,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:04,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 17:37:04,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:04,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 17:37:04,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:04,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:04,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:37:04,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:04,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:37:04,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:04,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 17:37:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:04,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:04,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:04,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 17:37:04,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:04,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 17:37:04,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:04,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:37:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:37:04,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:04,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:37:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:04,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:04,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:04,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:04,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 17:37:04,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:04,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 17:37:04,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:04,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:04,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:37:04,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:04,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:37:04,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:04,533 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 17:37:04,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122452590] [2020-10-14 17:37:04,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:04,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 17:37:04,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641253008] [2020-10-14 17:37:04,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 17:37:04,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:04,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 17:37:04,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:37:04,535 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-10-14 17:37:04,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:04,819 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-14 17:37:04,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:37:04,820 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-14 17:37:04,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:04,821 INFO L225 Difference]: With dead ends: 84 [2020-10-14 17:37:04,821 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 17:37:04,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 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 17:37:04,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 17:37:04,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-14 17:37:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 17:37:04,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-14 17:37:04,828 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 92 [2020-10-14 17:37:04,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:04,828 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-14 17:37:04,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 17:37:04,828 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-14 17:37:04,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 17:37:04,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:04,829 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 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 17:37:04,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 17:37:04,830 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:04,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:04,830 INFO L82 PathProgramCache]: Analyzing trace with hash -840122379, now seen corresponding path program 11 times [2020-10-14 17:37:04,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:04,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959866069] [2020-10-14 17:37:04,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:04,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:04,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:04,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:04,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:09,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:09,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 17:37:09,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:09,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 17:37:09,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:09,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:09,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:37:09,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:37:09,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:37:09,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:09,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:09,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:09,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:09,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:09,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:09,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:09,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:09,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:09,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:09,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:09,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:09,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:09,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:09,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:09,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:09,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 17:37:09,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:09,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 17:37:09,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:09,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:09,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:37:09,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:09,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:37:09,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:10,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 17:37:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:10,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:10,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:10,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:10,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 17:37:10,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:10,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 17:37:10,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:10,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:10,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:37:10,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:10,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:37:10,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:37:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:10,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:10,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 17:37:10,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:10,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 17:37:10,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:10,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:10,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:37:10,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:10,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:37:10,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:10,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 17:37:10,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959866069] [2020-10-14 17:37:10,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:10,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 17:37:10,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974212354] [2020-10-14 17:37:10,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 17:37:10,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:10,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 17:37:10,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:37:10,250 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 15 states. [2020-10-14 17:37:10,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:10,603 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-14 17:37:10,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 17:37:10,604 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2020-10-14 17:37:10,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:10,605 INFO L225 Difference]: With dead ends: 88 [2020-10-14 17:37:10,605 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 17:37:10,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 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 17:37:10,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 17:37:10,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-14 17:37:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 17:37:10,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-14 17:37:10,612 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 98 [2020-10-14 17:37:10,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:10,612 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-14 17:37:10,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 17:37:10,613 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-14 17:37:10,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 17:37:10,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:10,614 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 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 17:37:10,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 17:37:10,614 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:10,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:10,614 INFO L82 PathProgramCache]: Analyzing trace with hash 2125011955, now seen corresponding path program 12 times [2020-10-14 17:37:10,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:10,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094051639] [2020-10-14 17:37:10,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:10,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:10,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:10,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:15,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:15,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 17:37:15,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:15,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 17:37:15,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:15,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:37:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:37:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:37:15,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:15,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:15,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:15,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:15,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:15,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:15,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:15,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:15,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:15,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:15,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:15,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:15,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:15,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 17:37:15,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:15,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 17:37:15,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:15,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:15,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:37:15,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:15,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:37:15,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:15,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 17:37:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:15,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:15,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:15,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:15,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 17:37:15,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:15,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 17:37:15,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:15,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:37:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:37:15,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 17:37:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:15,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:15,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:16,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:16,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 17:37:16,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:16,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 17:37:16,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:16,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:16,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:37:16,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:16,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:37:16,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-14 17:37:16,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094051639] [2020-10-14 17:37:16,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:16,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 17:37:16,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679555795] [2020-10-14 17:37:16,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 17:37:16,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:16,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 17:37:16,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:37:16,092 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-14 17:37:16,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:16,440 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-14 17:37:16,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 17:37:16,441 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-10-14 17:37:16,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:16,442 INFO L225 Difference]: With dead ends: 92 [2020-10-14 17:37:16,442 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 17:37:16,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 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 17:37:16,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 17:37:16,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-14 17:37:16,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 17:37:16,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-14 17:37:16,456 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 104 [2020-10-14 17:37:16,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:16,456 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-14 17:37:16,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 17:37:16,456 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-14 17:37:16,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 17:37:16,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:16,458 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 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 17:37:16,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 17:37:16,458 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:16,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:16,462 INFO L82 PathProgramCache]: Analyzing trace with hash 657768817, now seen corresponding path program 13 times [2020-10-14 17:37:16,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:16,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086402577] [2020-10-14 17:37:16,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:16,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:16,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:16,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:16,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:21,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:21,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 17:37:21,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:21,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:37:21,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:21,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:37:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:37:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:37:21,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:21,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:21,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:21,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:21,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:21,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:21,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:21,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:21,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:21,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:21,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:21,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:21,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:21,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 17:37:21,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 17:37:21,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:21,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:37:21,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:21,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:37:21,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:37:21,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 17:37:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:21,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:22,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:22,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:22,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 17:37:22,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:22,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 17:37:22,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:22,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:22,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:37:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:37:22,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:37:22,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 17:37:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:22,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:22,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:22,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:22,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 17:37:22,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:22,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-14 17:37:22,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:22,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:37:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:37:22,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:37:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-14 17:37:22,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086402577] [2020-10-14 17:37:22,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:22,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 17:37:22,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750955425] [2020-10-14 17:37:22,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 17:37:22,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:22,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 17:37:22,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:37:22,414 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 17 states. [2020-10-14 17:37:22,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:22,963 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-14 17:37:22,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 17:37:22,963 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-14 17:37:22,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:22,964 INFO L225 Difference]: With dead ends: 96 [2020-10-14 17:37:22,965 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 17:37:22,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:37:22,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 17:37:22,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-14 17:37:22,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 17:37:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-14 17:37:22,976 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 110 [2020-10-14 17:37:22,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:22,976 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-14 17:37:22,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 17:37:22,976 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-14 17:37:22,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 17:37:22,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:22,979 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 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 17:37:22,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 17:37:22,979 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:22,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:22,980 INFO L82 PathProgramCache]: Analyzing trace with hash -2099638161, now seen corresponding path program 14 times [2020-10-14 17:37:22,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:22,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452915091] [2020-10-14 17:37:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:22,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:23,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:23,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:27,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:27,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 17:37:27,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:27,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:37:27,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:27,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:27,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:37:27,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 17:37:27,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:37:27,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:28,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:28,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:28,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:28,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:28,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:28,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:28,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:28,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:28,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:28,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:28,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:28,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:28,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:28,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:28,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:28,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:28,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 17:37:28,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:28,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-14 17:37:28,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:28,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:28,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:37:28,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:28,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:37:28,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:28,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 17:37:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:28,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:28,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:28,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 17:37:28,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:28,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 17:37:28,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:28,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:28,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:37:28,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:28,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:37:28,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:28,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 17:37:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:28,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:28,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:28,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:28,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 17:37:28,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:28,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 17:37:28,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:28,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:28,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:37:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:37:28,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-14 17:37:28,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452915091] [2020-10-14 17:37:28,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:28,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 17:37:28,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211386086] [2020-10-14 17:37:28,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 17:37:28,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:28,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 17:37:28,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:37:28,792 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 18 states. [2020-10-14 17:37:29,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:29,216 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-14 17:37:29,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 17:37:29,217 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-10-14 17:37:29,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:29,218 INFO L225 Difference]: With dead ends: 100 [2020-10-14 17:37:29,218 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 17:37:29,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 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 17:37:29,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 17:37:29,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-14 17:37:29,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 17:37:29,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-14 17:37:29,225 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 116 [2020-10-14 17:37:29,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:29,225 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-14 17:37:29,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 17:37:29,225 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-14 17:37:29,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 17:37:29,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:29,227 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 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 17:37:29,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 17:37:29,227 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:29,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:29,227 INFO L82 PathProgramCache]: Analyzing trace with hash -671389459, now seen corresponding path program 15 times [2020-10-14 17:37:29,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:29,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113452457] [2020-10-14 17:37:29,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:29,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:29,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:29,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:29,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:34,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:34,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 17:37:34,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:34,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 17:37:34,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:34,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:37:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 17:37:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:37:34,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:34,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:34,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:34,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:34,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:34,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:34,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:34,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:34,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:34,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:34,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:34,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:34,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:34,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:34,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 17:37:34,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:34,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 17:37:34,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:34,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:34,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:37:34,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:34,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:37:34,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:34,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 17:37:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:34,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:34,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:34,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 17:37:34,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:34,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 17:37:34,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:34,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:37:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:37:34,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:34,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 17:37:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:34,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:34,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:34,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:34,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 17:37:34,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:34,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 17:37:34,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:34,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:34,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:37:34,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:34,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:37:34,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-14 17:37:34,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113452457] [2020-10-14 17:37:34,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:34,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 17:37:34,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988309798] [2020-10-14 17:37:34,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 17:37:34,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:34,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 17:37:34,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:37:34,926 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 19 states. [2020-10-14 17:37:35,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:35,375 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-14 17:37:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 17:37:35,377 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-14 17:37:35,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:35,378 INFO L225 Difference]: With dead ends: 104 [2020-10-14 17:37:35,378 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 17:37:35,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:37:35,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 17:37:35,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-14 17:37:35,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 17:37:35,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-14 17:37:35,384 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 122 [2020-10-14 17:37:35,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:35,384 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-14 17:37:35,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 17:37:35,385 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-14 17:37:35,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 17:37:35,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:35,386 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 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 17:37:35,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 17:37:35,387 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:35,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:35,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1911346453, now seen corresponding path program 16 times [2020-10-14 17:37:35,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:35,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001995264] [2020-10-14 17:37:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:35,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:35,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:35,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:35,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:40,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:40,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 17:37:40,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:40,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 17:37:40,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:40,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:37:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 17:37:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:37:40,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:40,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:40,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:40,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:40,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:40,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:40,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:40,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:40,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:40,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:40,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:40,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:40,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:40,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:40,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:40,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:40,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:40,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 17:37:40,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:40,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 17:37:40,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:40,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:40,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:37:40,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:40,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:37:40,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:40,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 17:37:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:40,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:40,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:40,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 17:37:40,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:40,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 17:37:40,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:40,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:40,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:37:40,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:40,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:37:40,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:40,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 17:37:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:40,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:40,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:41,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:41,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 17:37:41,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:41,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 17:37:41,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:41,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:37:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:37:41,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:41,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-14 17:37:41,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001995264] [2020-10-14 17:37:41,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:41,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 17:37:41,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295049360] [2020-10-14 17:37:41,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 17:37:41,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:41,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 17:37:41,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 17:37:41,163 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 20 states. [2020-10-14 17:37:41,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:41,688 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-14 17:37:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 17:37:41,689 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 128 [2020-10-14 17:37:41,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:41,690 INFO L225 Difference]: With dead ends: 108 [2020-10-14 17:37:41,690 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 17:37:41,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 17:37:41,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 17:37:41,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-14 17:37:41,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 17:37:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-14 17:37:41,696 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 128 [2020-10-14 17:37:41,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:41,697 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-14 17:37:41,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 17:37:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-14 17:37:41,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 17:37:41,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:41,699 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 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 17:37:41,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 17:37:41,699 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:41,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:41,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1135851113, now seen corresponding path program 17 times [2020-10-14 17:37:41,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:41,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587998747] [2020-10-14 17:37:41,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:41,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:41,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:41,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:41,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:46,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:46,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 17:37:46,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:46,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 17:37:46,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:46,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:46,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:37:46,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 17:37:46,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:37:46,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:46,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:46,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:46,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:46,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:46,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:46,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:46,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:46,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:46,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:46,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:46,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:46,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:46,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:46,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:46,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:46,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:46,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 17:37:46,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:46,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 17:37:46,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:46,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:46,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:37:46,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:46,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:37:46,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:47,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 17:37:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:47,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:47,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:47,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 17:37:47,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:47,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 17:37:47,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:47,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:37:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:47,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:37:47,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:37:47,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 17:37:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:47,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:47,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:47,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:47,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 17:37:47,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:47,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 17:37:47,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:47,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:47,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:37:47,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:47,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:37:47,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-14 17:37:47,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587998747] [2020-10-14 17:37:47,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:47,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:37:47,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094440200] [2020-10-14 17:37:47,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:37:47,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:47,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:37:47,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:37:47,563 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 21 states. [2020-10-14 17:37:48,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:48,113 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-14 17:37:48,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 17:37:48,114 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 134 [2020-10-14 17:37:48,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:48,115 INFO L225 Difference]: With dead ends: 112 [2020-10-14 17:37:48,115 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 17:37:48,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 17:37:48,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 17:37:48,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-14 17:37:48,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 17:37:48,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-14 17:37:48,121 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 134 [2020-10-14 17:37:48,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:48,121 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-14 17:37:48,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:37:48,122 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-14 17:37:48,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 17:37:48,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:48,123 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 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 17:37:48,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 17:37:48,124 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:48,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:48,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1686596455, now seen corresponding path program 18 times [2020-10-14 17:37:48,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:48,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275173832] [2020-10-14 17:37:48,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:48,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:48,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:48,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:48,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:53,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:53,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 17:37:53,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:53,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 17:37:53,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:53,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:37:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:37:53,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:37:53,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:53,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:53,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:53,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:53,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:53,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:53,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:53,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:53,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:53,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:53,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:53,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:53,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:53,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 17:37:53,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:53,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 17:37:53,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:53,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:37:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:37:53,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:53,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 17:37:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:53,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:53,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:53,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:53,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 17:37:53,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:53,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-14 17:37:53,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:53,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:37:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:37:53,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:53,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 17:37:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:53,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:53,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:54,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:54,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 17:37:54,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:54,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 17:37:54,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:54,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:37:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:37:54,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:54,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-14 17:37:54,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275173832] [2020-10-14 17:37:54,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:54,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 17:37:54,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334618590] [2020-10-14 17:37:54,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 17:37:54,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:54,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 17:37:54,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:37:54,094 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 22 states. [2020-10-14 17:37:54,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:54,692 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-14 17:37:54,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 17:37:54,693 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 140 [2020-10-14 17:37:54,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:54,694 INFO L225 Difference]: With dead ends: 116 [2020-10-14 17:37:54,695 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 17:37:54,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 17:37:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 17:37:54,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-14 17:37:54,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 17:37:54,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-14 17:37:54,701 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 140 [2020-10-14 17:37:54,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:54,701 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-14 17:37:54,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 17:37:54,701 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-14 17:37:54,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 17:37:54,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:54,703 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 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 17:37:54,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 17:37:54,703 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:54,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1062250981, now seen corresponding path program 19 times [2020-10-14 17:37:54,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:54,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931361995] [2020-10-14 17:37:54,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:54,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:54,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:54,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:54,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:59,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:59,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 17:37:59,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:59,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:37:59,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:59,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:59,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:37:59,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:37:59,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:37:59,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:59,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:59,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:59,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:59,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:59,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:59,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:37:59,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:59,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:59,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:59,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:59,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:59,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:59,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 17:37:59,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:59,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 17:37:59,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:59,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:59,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:37:59,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:59,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:37:59,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:00,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 17:38:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:00,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:00,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:00,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:00,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 17:38:00,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:00,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 17:38:00,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:00,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:38:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:38:00,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:00,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 17:38:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:00,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:00,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:00,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:00,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 17:38:00,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:00,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-14 17:38:00,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:00,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:00,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:38:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:38:00,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-14 17:38:00,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931361995] [2020-10-14 17:38:00,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:00,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 17:38:00,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133612089] [2020-10-14 17:38:00,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 17:38:00,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:00,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 17:38:00,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:38:00,820 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 23 states. [2020-10-14 17:38:01,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:01,747 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-14 17:38:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 17:38:01,748 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 146 [2020-10-14 17:38:01,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:01,749 INFO L225 Difference]: With dead ends: 120 [2020-10-14 17:38:01,749 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 17:38:01,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 17:38:01,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 17:38:01,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-14 17:38:01,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 17:38:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-14 17:38:01,767 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 146 [2020-10-14 17:38:01,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:01,769 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-14 17:38:01,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 17:38:01,770 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-14 17:38:01,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 17:38:01,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:01,774 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 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 17:38:01,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 17:38:01,775 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:01,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:01,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1679175197, now seen corresponding path program 20 times [2020-10-14 17:38:01,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:01,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374020458] [2020-10-14 17:38:01,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:01,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:01,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:01,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:01,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:06,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:06,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 17:38:06,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:06,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:38:06,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:06,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:06,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:38:06,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-14 17:38:06,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:38:06,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:06,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:06,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:06,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:06,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:06,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:06,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:06,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:06,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:06,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:06,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:06,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:06,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:06,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:06,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:06,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:07,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:07,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 17:38:07,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:07,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-14 17:38:07,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:07,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:07,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:38:07,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:07,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:38:07,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:07,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 17:38:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:07,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:07,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:07,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 17:38:07,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:07,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 17:38:07,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:07,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:07,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:38:07,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:07,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:38:07,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:07,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 17:38:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:07,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:07,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:07,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:07,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 17:38:07,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:07,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-14 17:38:07,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:07,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:07,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:38:07,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:07,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:38:07,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:07,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 1200 proven. 2400 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-14 17:38:07,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374020458] [2020-10-14 17:38:07,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:07,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 17:38:07,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857156762] [2020-10-14 17:38:07,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 17:38:07,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:07,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 17:38:07,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:38:07,919 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 24 states. [2020-10-14 17:38:08,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:08,590 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-14 17:38:08,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 17:38:08,591 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 152 [2020-10-14 17:38:08,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:08,592 INFO L225 Difference]: With dead ends: 124 [2020-10-14 17:38:08,592 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 17:38:08,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 17:38:08,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 17:38:08,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-14 17:38:08,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 17:38:08,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-14 17:38:08,600 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 152 [2020-10-14 17:38:08,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:08,600 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-14 17:38:08,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 17:38:08,600 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-14 17:38:08,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 17:38:08,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:08,602 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 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 17:38:08,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 17:38:08,602 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:08,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:08,602 INFO L82 PathProgramCache]: Analyzing trace with hash -783989919, now seen corresponding path program 21 times [2020-10-14 17:38:08,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:08,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482586295] [2020-10-14 17:38:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:08,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:08,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:08,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:08,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:13,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:13,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 17:38:13,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:13,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 17:38:13,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:13,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:38:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 17:38:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:38:13,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:13,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:13,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:13,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:13,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:13,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:13,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:38:13,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:13,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:13,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:13,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:13,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:13,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:13,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:13,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:13,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:13,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 17:38:13,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:13,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-14 17:38:13,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:13,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:38:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:38:13,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:14,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 17:38:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:14,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:14,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:14,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 17:38:14,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:14,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 17:38:14,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:14,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:14,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:38:14,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:14,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:38:14,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:14,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 17:38:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:14,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:14,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:14,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:14,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 17:38:14,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:14,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-14 17:38:14,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:14,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:14,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:38:14,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:14,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:38:14,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1323 proven. 2646 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-14 17:38:14,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482586295] [2020-10-14 17:38:14,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:14,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 17:38:14,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095736874] [2020-10-14 17:38:14,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 17:38:14,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:14,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 17:38:14,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:38:14,911 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 25 states. [2020-10-14 17:38:15,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:15,889 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-14 17:38:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 17:38:15,892 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 158 [2020-10-14 17:38:15,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:15,893 INFO L225 Difference]: With dead ends: 128 [2020-10-14 17:38:15,893 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 17:38:15,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 17:38:15,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 17:38:15,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-14 17:38:15,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 17:38:15,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-14 17:38:15,906 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 158 [2020-10-14 17:38:15,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:15,906 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-14 17:38:15,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 17:38:15,906 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-14 17:38:15,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 17:38:15,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:15,908 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 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 17:38:15,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 17:38:15,910 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:15,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:15,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1533894239, now seen corresponding path program 22 times [2020-10-14 17:38:15,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:15,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487768255] [2020-10-14 17:38:15,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:15,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:16,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:16,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:20,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:20,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 17:38:20,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:20,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 17:38:20,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:20,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:20,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:38:20,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:38:20,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:38:20,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:20,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:20,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:20,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:20,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:20,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:20,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:20,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:20,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:20,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:20,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:20,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:20,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:20,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:20,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:21,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:21,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 17:38:21,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:21,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-14 17:38:21,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:21,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:38:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:38:21,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:21,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 17:38:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:21,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:21,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:21,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:21,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 17:38:21,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:21,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-14 17:38:21,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:21,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:38:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:38:21,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:38:21,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 17:38:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:21,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:21,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:22,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:22,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 17:38:22,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:22,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-14 17:38:22,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:22,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:38:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:38:22,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:22,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4503 backedges. 1452 proven. 2904 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-14 17:38:22,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487768255] [2020-10-14 17:38:22,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:22,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 17:38:22,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453793300] [2020-10-14 17:38:22,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 17:38:22,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:22,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 17:38:22,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:38:22,349 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 26 states. [2020-10-14 17:38:23,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:23,158 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-14 17:38:23,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 17:38:23,158 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 164 [2020-10-14 17:38:23,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:23,159 INFO L225 Difference]: With dead ends: 132 [2020-10-14 17:38:23,159 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 17:38:23,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 17:38:23,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 17:38:23,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-14 17:38:23,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 17:38:23,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-14 17:38:23,167 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 164 [2020-10-14 17:38:23,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:23,168 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-14 17:38:23,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 17:38:23,168 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-14 17:38:23,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 17:38:23,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:23,169 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 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 17:38:23,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 17:38:23,170 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:23,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:23,170 INFO L82 PathProgramCache]: Analyzing trace with hash -242973987, now seen corresponding path program 23 times [2020-10-14 17:38:23,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:23,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943477790] [2020-10-14 17:38:23,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:23,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:23,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:23,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:23,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:28,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:28,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 17:38:28,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:28,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 17:38:28,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:28,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:28,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:38:28,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:38:28,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:38:28,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:28,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:28,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:28,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:28,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:28,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:28,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:28,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:28,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:28,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:28,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:28,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:28,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:28,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 17:38:28,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:28,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-14 17:38:28,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:28,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:28,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:38:28,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:28,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:38:28,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:28,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 17:38:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:28,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:28,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:29,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:29,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 17:38:29,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:29,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-14 17:38:29,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:29,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:29,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:38:29,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:29,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:38:29,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:29,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 17:38:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:29,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:29,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:30,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:30,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 17:38:30,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:30,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 846 [2020-10-14 17:38:30,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:30,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:30,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:38:30,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:30,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:38:30,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:30,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4914 backedges. 1587 proven. 3174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-14 17:38:30,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943477790] [2020-10-14 17:38:30,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:30,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 17:38:30,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340445714] [2020-10-14 17:38:30,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 17:38:30,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:30,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 17:38:30,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:38:30,284 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 27 states. [2020-10-14 17:38:31,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:31,083 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-14 17:38:31,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 17:38:31,084 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 170 [2020-10-14 17:38:31,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:31,085 INFO L225 Difference]: With dead ends: 136 [2020-10-14 17:38:31,085 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 17:38:31,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 17:38:31,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 17:38:31,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-14 17:38:31,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 17:38:31,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-14 17:38:31,091 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 170 [2020-10-14 17:38:31,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:31,092 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-14 17:38:31,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 17:38:31,092 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-14 17:38:31,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-14 17:38:31,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:31,093 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 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 17:38:31,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 17:38:31,093 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:31,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:31,094 INFO L82 PathProgramCache]: Analyzing trace with hash 465899739, now seen corresponding path program 24 times [2020-10-14 17:38:31,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:31,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882500093] [2020-10-14 17:38:31,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:31,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:31,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:31,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:31,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:36,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:36,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 17:38:36,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:36,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:38:36,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:36,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:38:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:38:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:38:36,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:36,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:36,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:36,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:36,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:36,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:36,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:36,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:36,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:36,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:36,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:36,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:36,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:36,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:36,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:36,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:36,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 17:38:36,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:36,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-14 17:38:36,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:36,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:36,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:38:36,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:36,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:38:36,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:36,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 17:38:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:36,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:37,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:37,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:37,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 17:38:37,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:37,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-14 17:38:37,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:37,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:38:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:38:37,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:37,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 17:38:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:37,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:37,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:37,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:37,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 17:38:37,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:37,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-14 17:38:37,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:37,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:37,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:38:37,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:37,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:38:37,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 1728 proven. 3456 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 17:38:37,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882500093] [2020-10-14 17:38:37,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:37,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 17:38:37,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311597014] [2020-10-14 17:38:37,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 17:38:37,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:37,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 17:38:37,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:38:37,690 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 28 states. [2020-10-14 17:38:38,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:38,508 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-14 17:38:38,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 17:38:38,509 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 176 [2020-10-14 17:38:38,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:38,510 INFO L225 Difference]: With dead ends: 140 [2020-10-14 17:38:38,510 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 17:38:38,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 17:38:38,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 17:38:38,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-14 17:38:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 17:38:38,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-14 17:38:38,517 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 176 [2020-10-14 17:38:38,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:38,517 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-14 17:38:38,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 17:38:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-14 17:38:38,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 17:38:38,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:38,519 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 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 17:38:38,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 17:38:38,519 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:38,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:38,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1233217625, now seen corresponding path program 25 times [2020-10-14 17:38:38,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:38,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184043156] [2020-10-14 17:38:38,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:38,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:38,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:38,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:38,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:43,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:43,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 17:38:43,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:43,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:38:43,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:43,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:43,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:38:43,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:38:43,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:38:43,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:43,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:43,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:43,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:43,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:43,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:43,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:43,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:43,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:43,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:43,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:43,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:43,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:43,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:43,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:43,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:43,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 17:38:43,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:43,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-14 17:38:43,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:43,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:38:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:38:43,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:44,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 17:38:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:44,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:44,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:44,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:44,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 17:38:44,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-14 17:38:44,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:44,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:38:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:38:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:44,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 17:38:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:44,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:44,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:45,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:45,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 17:38:45,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:45,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-14 17:38:45,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:45,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:45,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:38:45,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:45,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:38:45,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:45,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 1875 proven. 3750 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-14 17:38:45,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184043156] [2020-10-14 17:38:45,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:45,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 17:38:45,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293828868] [2020-10-14 17:38:45,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 17:38:45,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:45,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 17:38:45,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:38:45,116 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 29 states. [2020-10-14 17:38:46,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:46,040 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-14 17:38:46,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 17:38:46,041 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 182 [2020-10-14 17:38:46,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:46,042 INFO L225 Difference]: With dead ends: 144 [2020-10-14 17:38:46,042 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 17:38:46,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 17:38:46,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 17:38:46,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-14 17:38:46,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 17:38:46,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-14 17:38:46,049 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 182 [2020-10-14 17:38:46,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:46,049 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-14 17:38:46,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 17:38:46,050 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-14 17:38:46,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 17:38:46,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:46,051 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 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 17:38:46,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 17:38:46,051 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:46,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:46,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1730406743, now seen corresponding path program 26 times [2020-10-14 17:38:46,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:46,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355960400] [2020-10-14 17:38:46,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:46,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:46,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:46,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:46,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:51,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:51,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 17:38:51,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:51,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 17:38:51,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:51,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:38:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 17:38:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:38:51,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:51,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:51,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:51,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:51,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:51,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:51,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:51,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:51,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:51,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:51,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:51,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:51,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:51,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:51,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 17:38:51,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:51,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-14 17:38:51,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:51,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:51,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:38:51,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:51,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:38:51,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:52,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 17:38:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:52,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:52,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:52,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 17:38:52,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:52,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-14 17:38:52,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:52,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:38:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:38:52,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:52,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 17:38:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:52,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:52,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:53,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:53,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 17:38:53,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:53,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-14 17:38:53,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:53,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:38:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:38:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6255 backedges. 2028 proven. 4056 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-14 17:38:53,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355960400] [2020-10-14 17:38:53,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:53,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 17:38:53,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584681092] [2020-10-14 17:38:53,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 17:38:53,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:53,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 17:38:53,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:38:53,145 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 30 states. [2020-10-14 17:38:54,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:54,013 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-14 17:38:54,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 17:38:54,014 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 188 [2020-10-14 17:38:54,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:54,015 INFO L225 Difference]: With dead ends: 148 [2020-10-14 17:38:54,015 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 17:38:54,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 17:38:54,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 17:38:54,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-14 17:38:54,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 17:38:54,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-14 17:38:54,022 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 188 [2020-10-14 17:38:54,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:54,023 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-14 17:38:54,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 17:38:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-14 17:38:54,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 17:38:54,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:54,024 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 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 17:38:54,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 17:38:54,024 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:54,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:54,025 INFO L82 PathProgramCache]: Analyzing trace with hash -198249515, now seen corresponding path program 27 times [2020-10-14 17:38:54,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:54,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38028218] [2020-10-14 17:38:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:54,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:54,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:54,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:54,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:59,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:59,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 17:38:59,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 17:38:59,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:59,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:38:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 17:38:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:38:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:59,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:59,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:59,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:59,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:59,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:59,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:59,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:59,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:59,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:59,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:59,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:59,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:59,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:59,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:59,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:59,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:59,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 17:38:59,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:59,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-10-14 17:38:59,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:59,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:59,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:38:59,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:59,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:38:59,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:00,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 17:39:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:00,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:00,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:00,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 17:39:00,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:00,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-14 17:39:00,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:00,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:39:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:39:00,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:00,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 17:39:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:00,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:00,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:00,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:00,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 17:39:00,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:00,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-14 17:39:00,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:00,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:39:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:39:00,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6738 backedges. 2187 proven. 4374 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-14 17:39:01,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38028218] [2020-10-14 17:39:01,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:01,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 17:39:01,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701250465] [2020-10-14 17:39:01,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 17:39:01,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:01,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 17:39:01,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:39:01,033 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 31 states. [2020-10-14 17:39:02,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:02,043 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-14 17:39:02,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 17:39:02,043 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 194 [2020-10-14 17:39:02,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:02,044 INFO L225 Difference]: With dead ends: 152 [2020-10-14 17:39:02,044 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 17:39:02,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 17:39:02,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 17:39:02,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-14 17:39:02,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 17:39:02,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-14 17:39:02,051 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 194 [2020-10-14 17:39:02,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:02,051 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-14 17:39:02,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 17:39:02,051 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-14 17:39:02,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 17:39:02,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:02,053 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 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 17:39:02,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 17:39:02,053 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:02,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:02,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1724061741, now seen corresponding path program 28 times [2020-10-14 17:39:02,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:02,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431438920] [2020-10-14 17:39:02,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:02,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:02,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:02,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:02,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:07,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:07,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 17:39:07,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:39:07,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 17:39:07,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:07,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:07,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:39:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 17:39:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:39:07,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:07,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:07,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:07,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:07,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:07,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:07,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:39:07,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:07,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:07,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:07,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:07,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:07,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:07,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:07,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 17:39:07,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:07,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-10-14 17:39:07,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:07,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:39:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:39:07,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:08,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 17:39:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:08,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:08,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:08,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 17:39:08,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:08,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-14 17:39:08,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:08,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:08,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:39:08,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:08,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:39:08,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:08,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 17:39:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:08,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:08,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:09,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:09,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 17:39:09,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:09,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-14 17:39:09,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:09,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:09,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:39:09,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:09,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:39:09,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:09,234 INFO L134 CoverageAnalysis]: Checked inductivity of 7239 backedges. 2352 proven. 4704 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-14 17:39:09,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431438920] [2020-10-14 17:39:09,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:09,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 17:39:09,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108055524] [2020-10-14 17:39:09,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 17:39:09,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:09,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 17:39:09,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 17:39:09,236 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 32 states. [2020-10-14 17:39:10,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:10,227 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-14 17:39:10,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 17:39:10,228 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 200 [2020-10-14 17:39:10,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:10,229 INFO L225 Difference]: With dead ends: 156 [2020-10-14 17:39:10,229 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 17:39:10,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-14 17:39:10,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 17:39:10,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-14 17:39:10,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 17:39:10,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-14 17:39:10,239 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 200 [2020-10-14 17:39:10,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:10,240 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-14 17:39:10,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 17:39:10,240 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-14 17:39:10,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-14 17:39:10,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:10,242 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 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 17:39:10,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 17:39:10,242 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:10,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:10,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1040196945, now seen corresponding path program 29 times [2020-10-14 17:39:10,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:10,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988212056] [2020-10-14 17:39:10,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:10,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:10,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:10,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:10,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:15,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:15,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 17:39:15,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:39:15,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 17:39:15,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:15,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:15,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:39:15,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 17:39:15,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:39:15,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:15,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:15,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:15,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:15,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:15,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:15,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:39:15,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:15,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:15,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:15,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:15,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:15,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:15,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:15,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:39:15,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:15,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-14 17:39:15,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:15,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:39:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:39:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:16,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 17:39:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:16,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:17,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:17,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:39:17,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:17,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-14 17:39:17,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:17,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:39:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:39:17,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:17,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 17:39:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:17,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:17,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:17,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:17,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:39:17,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:17,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-14 17:39:17,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:17,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:17,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:39:17,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:17,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:39:17,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7758 backedges. 2523 proven. 5046 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-14 17:39:17,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988212056] [2020-10-14 17:39:17,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:17,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 17:39:17,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088702992] [2020-10-14 17:39:17,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 17:39:17,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:17,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 17:39:17,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 17:39:17,613 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 33 states. [2020-10-14 17:39:18,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:18,762 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-14 17:39:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 17:39:18,763 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2020-10-14 17:39:18,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:18,764 INFO L225 Difference]: With dead ends: 160 [2020-10-14 17:39:18,764 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 17:39:18,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 17:39:18,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 17:39:18,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-14 17:39:18,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 17:39:18,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-14 17:39:18,772 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 206 [2020-10-14 17:39:18,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:18,773 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-14 17:39:18,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 17:39:18,773 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-14 17:39:18,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 17:39:18,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:18,774 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 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 17:39:18,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 17:39:18,775 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:18,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:18,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1622995889, now seen corresponding path program 30 times [2020-10-14 17:39:18,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:18,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985817148] [2020-10-14 17:39:18,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:18,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:18,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:18,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:18,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:23,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:23,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 17:39:23,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:39:23,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 17:39:23,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:23,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:23,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:39:23,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 17:39:23,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:39:23,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:23,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:23,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:23,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:23,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:23,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:23,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:39:23,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:23,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:23,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:23,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:23,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:23,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:24,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:24,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 17:39:24,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:24,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-14 17:39:24,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:24,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:24,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:39:24,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:24,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:39:24,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:25,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 17:39:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:25,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:25,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:25,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 17:39:25,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:25,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-14 17:39:25,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:25,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:25,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:39:25,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:25,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:39:25,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:25,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-14 17:39:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:25,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:25,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:26,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:26,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 17:39:26,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:26,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-14 17:39:26,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:26,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:26,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:39:26,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:26,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:39:26,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 8295 backedges. 2700 proven. 5400 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-14 17:39:26,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985817148] [2020-10-14 17:39:26,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:26,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 17:39:26,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472208030] [2020-10-14 17:39:26,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 17:39:26,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:26,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 17:39:26,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 17:39:26,184 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 34 states. [2020-10-14 17:39:27,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:27,321 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-14 17:39:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 17:39:27,322 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 212 [2020-10-14 17:39:27,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:27,323 INFO L225 Difference]: With dead ends: 164 [2020-10-14 17:39:27,323 INFO L226 Difference]: Without dead ends: 88 [2020-10-14 17:39:27,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 17:39:27,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-14 17:39:27,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-14 17:39:27,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 17:39:27,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-14 17:39:27,331 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 212 [2020-10-14 17:39:27,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:27,331 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-14 17:39:27,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 17:39:27,332 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-14 17:39:27,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-14 17:39:27,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:27,333 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 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 17:39:27,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 17:39:27,333 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:27,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:27,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1692925133, now seen corresponding path program 31 times [2020-10-14 17:39:27,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:27,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456279559] [2020-10-14 17:39:27,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:27,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:27,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:27,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:27,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:32,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:32,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 17:39:32,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:39:32,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 17:39:32,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:32,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:39:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 17:39:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:39:32,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:32,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:32,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:32,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:32,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:32,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:32,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:39:32,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:32,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:32,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:32,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:32,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:32,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:32,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:32,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 17:39:32,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:32,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-14 17:39:32,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:32,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:39:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:39:32,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:33,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 17:39:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:33,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:34,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:34,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 17:39:34,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:34,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-10-14 17:39:34,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:34,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:34,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:39:34,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:34,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:39:34,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:34,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-14 17:39:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:34,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:34,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:34,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:34,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 17:39:34,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:34,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-14 17:39:34,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:34,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:39:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:39:34,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:34,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2883 proven. 5766 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-14 17:39:34,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456279559] [2020-10-14 17:39:34,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:34,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 17:39:34,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252336034] [2020-10-14 17:39:34,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 17:39:34,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:34,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 17:39:34,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:39:34,873 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 35 states. [2020-10-14 17:39:36,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:36,117 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-14 17:39:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 17:39:36,117 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 218 [2020-10-14 17:39:36,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:36,118 INFO L225 Difference]: With dead ends: 168 [2020-10-14 17:39:36,119 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 17:39:36,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 17:39:36,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 17:39:36,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-14 17:39:36,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 17:39:36,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-14 17:39:36,126 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 218 [2020-10-14 17:39:36,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:36,126 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-14 17:39:36,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 17:39:36,126 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-14 17:39:36,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-14 17:39:36,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:36,128 INFO L422 BasicCegarLoop]: trace histogram [96, 96, 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 17:39:36,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 17:39:36,129 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:36,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:36,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1209444661, now seen corresponding path program 32 times [2020-10-14 17:39:36,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:36,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517352599] [2020-10-14 17:39:36,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:36,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:36,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:36,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:36,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:41,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:41,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-14 17:39:41,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:39:41,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 17:39:41,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:41,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:41,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:39:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 17:39:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:39:41,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:41,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:41,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:41,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:41,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:41,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:41,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:39:41,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:41,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:41,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:41,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:41,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:41,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:41,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:41,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:41,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:41,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:41,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 17:39:41,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:41,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-10-14 17:39:41,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:41,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:41,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:39:41,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:41,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:39:41,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:42,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 17:39:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:42,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:43,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:43,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 17:39:43,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:43,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-10-14 17:39:43,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:43,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:39:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:39:43,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:43,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 17:39:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:43,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:43,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:43,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:43,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 17:39:43,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:43,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-14 17:39:43,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:43,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:43,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:39:43,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:43,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:39:43,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 9423 backedges. 3072 proven. 6144 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-14 17:39:43,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517352599] [2020-10-14 17:39:43,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:43,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 17:39:43,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902855406] [2020-10-14 17:39:43,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 17:39:43,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:43,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 17:39:43,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 17:39:43,907 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 36 states. [2020-10-14 17:39:45,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:45,218 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2020-10-14 17:39:45,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 17:39:45,218 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 224 [2020-10-14 17:39:45,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:45,220 INFO L225 Difference]: With dead ends: 172 [2020-10-14 17:39:45,220 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 17:39:45,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2020-10-14 17:39:45,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 17:39:45,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-14 17:39:45,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 17:39:45,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-14 17:39:45,227 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 224 [2020-10-14 17:39:45,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:45,227 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-14 17:39:45,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 17:39:45,228 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-14 17:39:45,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 17:39:45,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:45,229 INFO L422 BasicCegarLoop]: trace histogram [99, 99, 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 17:39:45,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 17:39:45,229 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:45,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:45,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1482259017, now seen corresponding path program 33 times [2020-10-14 17:39:45,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:45,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894375973] [2020-10-14 17:39:45,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:45,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:45,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:45,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:45,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:50,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:50,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 17:39:50,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:39:50,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 17:39:50,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:50,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:39:50,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 17:39:50,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:39:50,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:50,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:50,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:50,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:50,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:50,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:50,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:39:50,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:50,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:50,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:50,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:50,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:50,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:50,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:50,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:50,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:50,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:50,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 17:39:50,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:50,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-10-14 17:39:50,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:50,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:39:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:39:50,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:51,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 17:39:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:51,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:52,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:52,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 17:39:52,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:52,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-14 17:39:52,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:52,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:39:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:39:52,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:52,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 17:39:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:52,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:52,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:53,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:53,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 17:39:53,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:53,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-14 17:39:53,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:53,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:39:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:39:53,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 10014 backedges. 3267 proven. 6534 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-14 17:39:53,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894375973] [2020-10-14 17:39:53,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:53,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 17:39:53,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682250459] [2020-10-14 17:39:53,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 17:39:53,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:53,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 17:39:53,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 17:39:53,238 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 37 states. [2020-10-14 17:39:54,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:54,618 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-10-14 17:39:54,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 17:39:54,618 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 230 [2020-10-14 17:39:54,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:54,620 INFO L225 Difference]: With dead ends: 176 [2020-10-14 17:39:54,620 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 17:39:54,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2020-10-14 17:39:54,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 17:39:54,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-14 17:39:54,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 17:39:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-14 17:39:54,627 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 230 [2020-10-14 17:39:54,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:54,627 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-14 17:39:54,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 17:39:54,627 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-14 17:39:54,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-14 17:39:54,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:54,629 INFO L422 BasicCegarLoop]: trace histogram [102, 102, 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 17:39:54,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 17:39:54,629 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:54,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:54,630 INFO L82 PathProgramCache]: Analyzing trace with hash 862111559, now seen corresponding path program 34 times [2020-10-14 17:39:54,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:54,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978493257] [2020-10-14 17:39:54,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:54,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:54,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:54,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:54,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking...