/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_15x0-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:37:53,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:37:53,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:37:53,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:37:53,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:37:53,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:37:53,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:37:53,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:37:53,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:37:53,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:37:53,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:37:53,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:37:53,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:37:53,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:37:53,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:37:53,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:37:53,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:37:53,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:37:53,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:37:53,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:37:53,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:37:53,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:37:53,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:37:53,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:37:53,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:37:53,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:37:53,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:37:53,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:37:53,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:37:53,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:37:53,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:37:53,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:37:53,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:37:53,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:37:53,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:37:53,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:37:53,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:37:53,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:37:53,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:37:53,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:37:53,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:37:53,302 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 [2020-09-25 06:37:53,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:37:53,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:37:53,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:37:53,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:37:53,353 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:37:53,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:37:53,353 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:37:53,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:37:53,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:37:53,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:37:53,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:37:53,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:37:53,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:37:53,356 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:37:53,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:37:53,357 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:37:53,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:37:53,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:37:53,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:37:53,357 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:37:53,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:37:53,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:37:53,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:37:53,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:37:53,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:37:53,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:37:53,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:37:53,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:37:53,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:37:53,360 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:37:53,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:37:53,855 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:37:53,859 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:37:53,861 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:37:53,862 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:37:53,863 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_15x0-2.c [2020-09-25 06:37:53,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/502295b4c/a1002279b3aa4e9cac872bf72d296b42/FLAG0f2e622a2 [2020-09-25 06:37:54,498 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:37:54,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_15x0-2.c [2020-09-25 06:37:54,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/502295b4c/a1002279b3aa4e9cac872bf72d296b42/FLAG0f2e622a2 [2020-09-25 06:37:54,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/502295b4c/a1002279b3aa4e9cac872bf72d296b42 [2020-09-25 06:37:54,880 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:37:54,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:37:54,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:37:54,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:37:54,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:37:54,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:37:54" (1/1) ... [2020-09-25 06:37:54,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1003e016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:54, skipping insertion in model container [2020-09-25 06:37:54,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:37:54" (1/1) ... [2020-09-25 06:37:54,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:37:54,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:37:55,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:37:55,141 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:37:55,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:37:55,181 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:37:55,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:55 WrapperNode [2020-09-25 06:37:55,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:37:55,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:37:55,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:37:55,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:37:55,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:55" (1/1) ... [2020-09-25 06:37:55,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:55" (1/1) ... [2020-09-25 06:37:55,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:55" (1/1) ... [2020-09-25 06:37:55,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:55" (1/1) ... [2020-09-25 06:37:55,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:55" (1/1) ... [2020-09-25 06:37:55,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:55" (1/1) ... [2020-09-25 06:37:55,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:55" (1/1) ... [2020-09-25 06:37:55,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:37:55,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:37:55,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:37:55,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:37:55,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:55" (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 [2020-09-25 06:37:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:37:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:37:55,377 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-25 06:37:55,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:37:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:37:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-25 06:37:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:37:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:37:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:37:55,593 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:37:55,593 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:37:55,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:37:55 BoogieIcfgContainer [2020-09-25 06:37:55,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:37:55,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:37:55,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:37:55,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:37:55,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:37:54" (1/3) ... [2020-09-25 06:37:55,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748e98c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:37:55, skipping insertion in model container [2020-09-25 06:37:55,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:37:55" (2/3) ... [2020-09-25 06:37:55,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748e98c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:37:55, skipping insertion in model container [2020-09-25 06:37:55,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:37:55" (3/3) ... [2020-09-25 06:37:55,609 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_15x0-2.c [2020-09-25 06:37:55,619 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:37:55,629 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:37:55,652 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:37:55,686 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:37:55,686 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:37:55,686 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:37:55,686 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:37:55,687 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:37:55,687 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:37:55,687 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:37:55,687 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:37:55,715 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 06:37:55,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 06:37:55,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:55,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:55,726 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:55,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:55,733 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-25 06:37:55,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:55,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281015307] [2020-09-25 06:37:55,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:55,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:56,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:56,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:56,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:37:56,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:56,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 06:37:56,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:56,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:56,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:37:56,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:56,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:37:56,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:37:56,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:56,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:56,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:56,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:56,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:56,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:37:56,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:56,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:56,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:56,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:56,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:56,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:56,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:37:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:56,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:56,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:56,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:56,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:56,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 06:37:56,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:56,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:56,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:37:56,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:56,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:37:56,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:37:56,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281015307] [2020-09-25 06:37:56,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:37:56,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:37:56,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843652712] [2020-09-25 06:37:56,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:37:56,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:56,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:37:56,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:37:56,467 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-25 06:37:56,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:56,625 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-25 06:37:56,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:37:56,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 06:37:56,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:56,647 INFO L225 Difference]: With dead ends: 39 [2020-09-25 06:37:56,647 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 06:37:56,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:37:56,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 06:37:56,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-25 06:37:56,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 06:37:56,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-25 06:37:56,735 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-25 06:37:56,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:56,736 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-25 06:37:56,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:37:56,737 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-25 06:37:56,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 06:37:56,740 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:56,741 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:56,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:37:56,741 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:56,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:56,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-25 06:37:56,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:56,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171013714] [2020-09-25 06:37:56,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:56,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:56,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:57,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:57,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 06:37:57,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:57,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-09-25 06:37:57,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:57,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:57,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:37:57,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:57,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:37:57,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:57,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:57,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:57,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:57,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:57,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:57,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:37:57,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:57,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:57,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 06:37:57,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:37:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:57,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:57,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:57,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:37:57,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:57,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 06:37:57,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:57,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:57,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:37:57,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:57,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:37:57,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:57,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:57,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:57,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:57,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:57,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:57,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 06:37:57,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:57,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:57,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:57,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:57,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:37:57,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:37:57,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171013714] [2020-09-25 06:37:57,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:57,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:37:57,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905183276] [2020-09-25 06:37:57,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:37:57,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:57,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:37:57,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:37:57,606 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 7 states. [2020-09-25 06:37:57,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:57,700 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-25 06:37:57,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:37:57,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-25 06:37:57,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:57,702 INFO L225 Difference]: With dead ends: 36 [2020-09-25 06:37:57,703 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 06:37:57,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:37:57,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 06:37:57,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 06:37:57,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 06:37:57,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 06:37:57,712 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-25 06:37:57,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:57,713 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 06:37:57,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:37:57,713 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 06:37:57,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 06:37:57,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:57,715 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:57,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:37:57,716 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:57,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:57,716 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-25 06:37:57,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:57,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611201148] [2020-09-25 06:37:57,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:57,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:57,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:58,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:58,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 06:37:58,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:58,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-09-25 06:37:58,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:58,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:58,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:37:58,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:58,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:37:58,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:58,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:58,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:58,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:58,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:58,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:58,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:37:58,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:58,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:58,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:58,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:58,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:58,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:37:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:58,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:58,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:58,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:37:58,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:58,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 06:37:58,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:58,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:58,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:37:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:37:58,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:58,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:58,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:58,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:58,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:37:58,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:58,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 06:37:58,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:58,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:58,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:37:58,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:37:58,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:58,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:58,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:58,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:58,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:58,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:58,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:37:58,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:58,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:58,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:58,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:58,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:37:58,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:58,613 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 06:37:58,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611201148] [2020-09-25 06:37:58,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:58,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:37:58,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000303972] [2020-09-25 06:37:58,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:37:58,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:58,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:37:58,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:37:58,617 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2020-09-25 06:37:58,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:58,715 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-09-25 06:37:58,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:37:58,716 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-25 06:37:58,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:58,717 INFO L225 Difference]: With dead ends: 41 [2020-09-25 06:37:58,718 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 06:37:58,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:37:58,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 06:37:58,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-25 06:37:58,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 06:37:58,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-25 06:37:58,727 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-09-25 06:37:58,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:58,728 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-25 06:37:58,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:37:58,728 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-25 06:37:58,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 06:37:58,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:58,730 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:58,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:37:58,731 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:58,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:58,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-09-25 06:37:58,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:58,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883588371] [2020-09-25 06:37:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:58,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:58,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:59,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:59,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 06:37:59,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:59,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 883 [2020-09-25 06:37:59,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:59,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:37:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:37:59,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:59,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:59,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:59,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:59,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:59,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:59,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:59,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:59,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:59,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:59,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:59,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:59,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:59,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:37:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:59,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:59,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:59,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:37:59,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:59,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 06:37:59,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:59,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:37:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 06:37:59,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:59,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:59,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:59,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:59,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:37:59,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:59,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 06:37:59,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:59,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:59,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:37:59,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:59,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:37:59,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:59,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:00,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:00,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:00,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:00,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:00,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 06:38:00,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:00,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:00,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:00,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:00,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:00,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:00,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:00,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:38:00,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:00,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:00,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 06:38:00,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883588371] [2020-09-25 06:38:00,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:00,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:38:00,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229392605] [2020-09-25 06:38:00,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:38:00,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:00,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:38:00,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:38:00,156 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states. [2020-09-25 06:38:00,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:00,312 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-25 06:38:00,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:38:00,314 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 06:38:00,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:00,317 INFO L225 Difference]: With dead ends: 46 [2020-09-25 06:38:00,317 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 06:38:00,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:38:00,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 06:38:00,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 06:38:00,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 06:38:00,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-25 06:38:00,330 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-09-25 06:38:00,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:00,334 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-25 06:38:00,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:38:00,335 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-25 06:38:00,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 06:38:00,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:00,337 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:00,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:38:00,337 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:00,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:00,338 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-09-25 06:38:00,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:00,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897773243] [2020-09-25 06:38:00,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:00,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:00,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:02,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:02,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 06:38:02,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:02,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2041 [2020-09-25 06:38:02,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:02,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:02,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:38:02,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:02,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:38:02,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:02,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:02,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:02,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:02,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:02,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:02,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:38:02,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:02,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:02,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:02,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:02,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:02,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:02,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:02,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:02,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:02,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:02,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:02,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-25 06:38:02,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:02,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:02,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:38:02,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:02,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 06:38:02,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:02,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:02,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:02,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:02,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:02,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:02,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 06:38:02,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:02,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:02,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:02,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:02,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:02,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:03,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:03,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:03,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:03,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:03,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:03,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 06:38:03,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:03,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:03,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:03,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:03,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:03,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:03,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:03,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:03,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:03,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:03,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:03,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 06:38:03,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:03,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:03,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:03,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:03,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:03,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:03,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:03,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:03,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:03,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:38:03,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:03,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:03,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:03,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:03,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:03,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-25 06:38:03,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897773243] [2020-09-25 06:38:03,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:03,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:38:03,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049990135] [2020-09-25 06:38:03,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:38:03,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:03,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:38:03,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:38:03,332 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 10 states. [2020-09-25 06:38:03,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:03,456 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 06:38:03,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:38:03,457 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-09-25 06:38:03,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:03,458 INFO L225 Difference]: With dead ends: 51 [2020-09-25 06:38:03,458 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 06:38:03,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:38:03,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 06:38:03,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 06:38:03,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 06:38:03,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-25 06:38:03,469 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-09-25 06:38:03,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:03,469 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-25 06:38:03,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:38:03,470 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-25 06:38:03,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 06:38:03,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:03,471 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:03,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:38:03,471 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:03,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:03,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-09-25 06:38:03,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:03,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977104122] [2020-09-25 06:38:03,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:03,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:03,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:07,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:07,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 06:38:07,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:07,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3955 [2020-09-25 06:38:07,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:07,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:07,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:38:07,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:07,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 06:38:07,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:07,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:07,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:07,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:07,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:07,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:07,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:38:07,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:07,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:07,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:07,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:07,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:07,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:07,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:07,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:07,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:07,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:07,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:07,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-25 06:38:07,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:07,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:07,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:38:07,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:07,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 06:38:07,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:07,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:07,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:08,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:08,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:08,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:08,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 06:38:08,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:08,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:08,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:08,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:08,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:08,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:08,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:08,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:08,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:08,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:08,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:08,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 06:38:08,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:08,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:08,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:08,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:08,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:08,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:08,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:08,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:08,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:08,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 06:38:08,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:08,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:08,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:08,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:08,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:08,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:08,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:08,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:08,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:08,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:08,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 06:38:08,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:08,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:08,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:08,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:08,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:08,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:08,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:08,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:08,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:08,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:08,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:08,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:38:08,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:08,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:08,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:08,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:08,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:08,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 12 proven. 70 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 06:38:08,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977104122] [2020-09-25 06:38:08,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:08,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:38:08,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913746026] [2020-09-25 06:38:08,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:38:08,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:08,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:38:08,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:38:08,523 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 11 states. [2020-09-25 06:38:08,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:08,664 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-09-25 06:38:08,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:38:08,664 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-25 06:38:08,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:08,666 INFO L225 Difference]: With dead ends: 56 [2020-09-25 06:38:08,666 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 06:38:08,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:38:08,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 06:38:08,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 06:38:08,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 06:38:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 06:38:08,682 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-09-25 06:38:08,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:08,684 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 06:38:08,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:38:08,684 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 06:38:08,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 06:38:08,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:08,688 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:08,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:38:08,689 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:08,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:08,692 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-09-25 06:38:08,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:08,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742623560] [2020-09-25 06:38:08,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:08,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:08,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:12,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:12,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-25 06:38:12,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:12,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4098 [2020-09-25 06:38:12,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:12,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 06:38:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 06:38:12,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:12,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:12,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:12,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:12,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:12,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:12,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:38:12,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:12,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:12,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:12,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:12,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:12,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:12,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:12,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:13,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:13,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:38:13,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:13,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-09-25 06:38:13,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:13,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:13,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 06:38:13,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:13,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 06:38:13,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:13,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:13,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:13,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:13,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:13,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:13,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-25 06:38:13,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:13,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:38:13,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:13,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:38:13,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:13,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:13,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:13,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:13,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:13,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:13,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 06:38:13,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:13,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:13,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:13,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:13,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:13,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:13,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:13,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:13,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:13,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:13,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:13,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 06:38:13,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:13,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:13,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:13,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:13,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:13,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:13,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:13,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:14,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:14,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:14,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:14,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 06:38:14,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:14,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:14,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:14,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:14,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:14,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:14,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:14,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:14,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:14,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:14,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:14,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 06:38:14,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:14,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:14,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:14,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:14,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:14,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:14,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:14,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:14,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:14,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:14,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:38:14,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:14,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:14,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:14,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-25 06:38:14,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742623560] [2020-09-25 06:38:14,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:14,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:38:14,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590289386] [2020-09-25 06:38:14,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:38:14,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:14,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:38:14,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:38:14,259 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 12 states. [2020-09-25 06:38:14,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:14,468 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-25 06:38:14,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:38:14,468 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-25 06:38:14,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:14,473 INFO L225 Difference]: With dead ends: 61 [2020-09-25 06:38:14,473 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 06:38:14,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:38:14,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 06:38:14,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 06:38:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 06:38:14,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-09-25 06:38:14,498 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-09-25 06:38:14,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:14,499 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-09-25 06:38:14,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:38:14,499 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-09-25 06:38:14,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 06:38:14,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:14,503 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:14,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:38:14,504 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:14,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:14,504 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-09-25 06:38:14,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:14,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682481353] [2020-09-25 06:38:14,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:14,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:14,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:19,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:19,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 06:38:19,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:19,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:38:19,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:19,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:19,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 06:38:19,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:19,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:38:19,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:19,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:19,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:19,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:19,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:19,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:38:19,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:19,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:19,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:19,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:19,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:19,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:19,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:19,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:19,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:19,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:38:19,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:19,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-09-25 06:38:19,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:19,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:19,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 06:38:19,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:19,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 06:38:19,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:20,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:20,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:20,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:20,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:38:20,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:20,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-09-25 06:38:20,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:20,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:38:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:38:20,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:20,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:20,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:20,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:20,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:20,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:20,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 06:38:20,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:20,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:38:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:20,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:38:20,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:20,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:20,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:20,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:20,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:20,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:20,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 06:38:20,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:20,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:20,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:20,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:20,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:20,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:20,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:21,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:21,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:21,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:21,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 06:38:21,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:21,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:21,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:21,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:21,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:21,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:21,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:21,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:21,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:21,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:21,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 06:38:21,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:21,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:21,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:21,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:21,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:21,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:21,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:21,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:21,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:21,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:21,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:21,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 06:38:21,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:21,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:21,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:21,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:21,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:21,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:21,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:21,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:21,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:21,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:21,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:21,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:38:21,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:21,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:21,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:21,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:21,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:21,291 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 29 proven. 134 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-09-25 06:38:21,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682481353] [2020-09-25 06:38:21,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:21,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 06:38:21,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943125664] [2020-09-25 06:38:21,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 06:38:21,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:21,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 06:38:21,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:38:21,296 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 13 states. [2020-09-25 06:38:21,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:21,477 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-09-25 06:38:21,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:38:21,478 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-09-25 06:38:21,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:21,479 INFO L225 Difference]: With dead ends: 66 [2020-09-25 06:38:21,479 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 06:38:21,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-25 06:38:21,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 06:38:21,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 06:38:21,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 06:38:21,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 06:38:21,495 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-09-25 06:38:21,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:21,499 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 06:38:21,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 06:38:21,500 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 06:38:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 06:38:21,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:21,501 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:21,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:38:21,501 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:21,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:21,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-09-25 06:38:21,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:21,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361638862] [2020-09-25 06:38:21,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:21,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:21,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:26,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:26,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 06:38:26,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:26,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 06:38:26,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:26,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:26,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 06:38:26,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:26,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 06:38:26,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:26,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:26,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:26,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:26,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:26,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:26,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:38:26,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:26,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:26,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:26,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:26,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:26,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:26,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:26,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:27,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:27,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 06:38:27,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:27,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-09-25 06:38:27,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:27,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 06:38:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 06:38:27,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:27,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:27,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:27,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:27,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:38:27,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:27,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-09-25 06:38:27,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:27,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 06:38:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:38:27,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:27,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:27,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:27,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:27,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:38:27,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:27,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-09-25 06:38:27,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:27,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:38:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:38:27,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:28,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:28,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:28,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:28,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:28,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:28,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 06:38:28,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:28,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:28,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:38:28,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:28,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:38:28,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:28,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:28,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:28,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:28,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:28,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:28,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-25 06:38:28,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:28,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:28,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:28,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:28,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:28,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:28,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:28,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:28,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:28,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:28,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:28,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 06:38:28,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:28,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:28,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:28,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:28,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:28,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:28,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:28,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:28,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:28,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:28,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 06:38:28,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:28,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:28,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:28,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:28,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:28,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:28,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:28,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:28,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:28,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:28,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:28,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 06:38:28,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:28,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:28,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:28,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:28,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:28,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:28,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:28,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:28,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:38:28,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:28,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:28,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:28,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:28,915 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 33 proven. 186 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 06:38:28,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361638862] [2020-09-25 06:38:28,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:28,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 06:38:28,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15105589] [2020-09-25 06:38:28,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 06:38:28,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:28,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 06:38:28,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:38:28,918 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 15 states. [2020-09-25 06:38:29,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:29,086 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 06:38:29,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:38:29,087 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 90 [2020-09-25 06:38:29,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:29,092 INFO L225 Difference]: With dead ends: 71 [2020-09-25 06:38:29,093 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 06:38:29,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=361, Unknown=0, NotChecked=0, Total=552 [2020-09-25 06:38:29,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 06:38:29,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 06:38:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 06:38:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-09-25 06:38:29,105 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-09-25 06:38:29,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:29,105 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-09-25 06:38:29,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 06:38:29,105 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-09-25 06:38:29,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 06:38:29,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:29,109 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:29,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:38:29,112 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:29,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:29,113 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-09-25 06:38:29,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:29,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116715123] [2020-09-25 06:38:29,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:29,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:29,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:34,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:34,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 06:38:34,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:34,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:38:34,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:34,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 06:38:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 06:38:34,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:34,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:34,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:34,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:34,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:34,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:34,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:38:34,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:34,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:34,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:34,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:34,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:34,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:34,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:34,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:34,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 06:38:34,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:34,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-09-25 06:38:34,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:34,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:34,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 06:38:34,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:34,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 06:38:34,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:34,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:34,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:35,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:35,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 06:38:35,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:35,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-09-25 06:38:35,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:35,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:35,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 06:38:35,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:35,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 06:38:35,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:35,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:35,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:35,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:35,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:38:35,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:35,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-09-25 06:38:35,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:35,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 06:38:35,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:35,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:38:35,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:35,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:35,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:35,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:35,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:38:35,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:35,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-25 06:38:35,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:35,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:35,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:38:35,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:35,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:38:35,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:35,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:36,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:36,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:36,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:36,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:36,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-25 06:38:36,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:36,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:38:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:38:36,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:36,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:36,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:36,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:36,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:36,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:36,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 06:38:36,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:36,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:36,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:36,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:36,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:36,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:36,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:36,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:36,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 06:38:36,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:36,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:36,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:36,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:36,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:36,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:36,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:36,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:36,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:36,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:36,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:36,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 06:38:36,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:36,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:36,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:36,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:36,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:36,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:36,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:36,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:36,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:36,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:36,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:36,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 06:38:36,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:36,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:36,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:36,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:36,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:36,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:36,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:36,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:36,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:38:36,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:36,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:36,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:36,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:36,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:36,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:36,846 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 39 proven. 205 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-09-25 06:38:36,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116715123] [2020-09-25 06:38:36,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:36,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 06:38:36,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293868568] [2020-09-25 06:38:36,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 06:38:36,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:36,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 06:38:36,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:38:36,849 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 15 states. [2020-09-25 06:38:37,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:37,003 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-09-25 06:38:37,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:38:37,003 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 99 [2020-09-25 06:38:37,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:37,005 INFO L225 Difference]: With dead ends: 76 [2020-09-25 06:38:37,005 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 06:38:37,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-25 06:38:37,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 06:38:37,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 06:38:37,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 06:38:37,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 06:38:37,020 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 99 [2020-09-25 06:38:37,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:37,020 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 06:38:37,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 06:38:37,020 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 06:38:37,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 06:38:37,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:37,022 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:37,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 06:38:37,027 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:37,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:37,027 INFO L82 PathProgramCache]: Analyzing trace with hash -276966773, now seen corresponding path program 10 times [2020-09-25 06:38:37,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:37,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468114805] [2020-09-25 06:38:37,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:37,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:37,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:42,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:42,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 06:38:42,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:42,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:38:42,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:42,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:42,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 06:38:42,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:38:42,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 06:38:42,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:42,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:42,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:42,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:42,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:38:42,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:42,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:38:42,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:42,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:42,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:42,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:42,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:42,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:42,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 06:38:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:42,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:42,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:42,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 06:38:42,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:42,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 634 [2020-09-25 06:38:42,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:42,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 06:38:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 06:38:42,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:42,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:42,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:43,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:43,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 06:38:43,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:43,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-09-25 06:38:43,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:43,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:43,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 06:38:43,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:43,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 06:38:43,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:43,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:43,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:43,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:43,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 06:38:43,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:43,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-09-25 06:38:43,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:43,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:43,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 06:38:43,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:43,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 06:38:43,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:43,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:43,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:44,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:44,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:38:44,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:44,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-09-25 06:38:44,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:44,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 06:38:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:38:44,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:44,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:44,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:44,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:44,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:38:44,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:44,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-09-25 06:38:44,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:44,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:44,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:38:44,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:44,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:38:44,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:44,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:44,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:45,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:45,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:38:45,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:45,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-09-25 06:38:45,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:45,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:38:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:38:45,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:45,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:45,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:45,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:45,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:38:45,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:45,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 06:38:45,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:45,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:45,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:38:45,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:45,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:38:45,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:45,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:45,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:45,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:45,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 06:38:45,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:45,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 06:38:45,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:45,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:45,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:38:45,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:45,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:38:45,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:45,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:45,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:45,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:45,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:38:45,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:45,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 06:38:45,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:45,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:38:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:45,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:45,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:45,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:45,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:45,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:38:45,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:45,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 06:38:45,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:45,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:45,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:45,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:45,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:38:45,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:45,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:45,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:45,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:45,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:38:45,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:45,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:38:45,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:45,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:45,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:38:45,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:45,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:45,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:38:45,827 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 18 proven. 296 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-09-25 06:38:45,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468114805] [2020-09-25 06:38:45,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:45,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 06:38:45,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901484121] [2020-09-25 06:38:45,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 06:38:45,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:45,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 06:38:45,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:38:45,830 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 16 states. [2020-09-25 06:38:46,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:46,046 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-09-25 06:38:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:38:46,047 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-09-25 06:38:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:46,049 INFO L225 Difference]: With dead ends: 81 [2020-09-25 06:38:46,049 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 06:38:46,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-09-25 06:38:46,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 06:38:46,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-09-25 06:38:46,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 06:38:46,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-09-25 06:38:46,057 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 108 [2020-09-25 06:38:46,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:46,058 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-09-25 06:38:46,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 06:38:46,058 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-09-25 06:38:46,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 06:38:46,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:46,059 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:38:46,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 06:38:46,060 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:46,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:46,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1749540651, now seen corresponding path program 11 times [2020-09-25 06:38:46,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:46,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407888474] [2020-09-25 06:38:46,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:46,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:46,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking...