/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=0.4 --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_25x0-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:29:37,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:29:37,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:29:37,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:29:37,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:29:37,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:29:37,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:29:37,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:29:37,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:29:37,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:29:37,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:29:37,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:29:37,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:29:37,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:29:37,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:29:37,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:29:37,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:29:37,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:29:37,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:29:37,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:29:37,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:29:37,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:29:37,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:29:37,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:29:37,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:29:37,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:29:37,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:29:37,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:29:37,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:29:37,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:29:37,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:29:37,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:29:37,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:29:37,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:29:37,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:29:37,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:29:37,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:29:37,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:29:37,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:29:37,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:29:37,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:29:37,856 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 05:29:37,898 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:29:37,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:29:37,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:29:37,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:29:37,902 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:29:37,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:29:37,902 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:29:37,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:29:37,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:29:37,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:29:37,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:29:37,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:29:37,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:29:37,905 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:29:37,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:29:37,905 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:29:37,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:29:37,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:29:37,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:29:37,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:29:37,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:29:37,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:29:37,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:29:37,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:29:37,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:29:37,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:29:37,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:29:37,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:29:37,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:29:37,908 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:29:38,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:29:38,441 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:29:38,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:29:38,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:29:38,449 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:29:38,450 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_25x0-2.c [2020-09-25 05:29:38,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d83495e1/a3b54f9e9ef94caba0966fda162a3614/FLAGdb717fa03 [2020-09-25 05:29:39,065 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:29:39,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_25x0-2.c [2020-09-25 05:29:39,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d83495e1/a3b54f9e9ef94caba0966fda162a3614/FLAGdb717fa03 [2020-09-25 05:29:39,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d83495e1/a3b54f9e9ef94caba0966fda162a3614 [2020-09-25 05:29:39,433 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:29:39,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:29:39,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:29:39,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:29:39,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:29:39,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:29:39" (1/1) ... [2020-09-25 05:29:39,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e7cadc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:39, skipping insertion in model container [2020-09-25 05:29:39,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:29:39" (1/1) ... [2020-09-25 05:29:39,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:29:39,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:29:39,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:29:39,712 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:29:39,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:29:39,749 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:29:39,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:39 WrapperNode [2020-09-25 05:29:39,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:29:39,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:29:39,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:29:39,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:29:39,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:39" (1/1) ... [2020-09-25 05:29:39,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:39" (1/1) ... [2020-09-25 05:29:39,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:39" (1/1) ... [2020-09-25 05:29:39,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:39" (1/1) ... [2020-09-25 05:29:39,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:39" (1/1) ... [2020-09-25 05:29:39,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:39" (1/1) ... [2020-09-25 05:29:39,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:39" (1/1) ... [2020-09-25 05:29:39,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:29:39,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:29:39,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:29:39,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:29:39,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:39" (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 05:29:39,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:29:39,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:29:39,936 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-25 05:29:39,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:29:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:29:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-25 05:29:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:29:39,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:29:39,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:29:40,204 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:29:40,204 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:29:40,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:29:40 BoogieIcfgContainer [2020-09-25 05:29:40,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:29:40,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:29:40,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:29:40,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:29:40,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:29:39" (1/3) ... [2020-09-25 05:29:40,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12303a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:29:40, skipping insertion in model container [2020-09-25 05:29:40,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:29:39" (2/3) ... [2020-09-25 05:29:40,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12303a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:29:40, skipping insertion in model container [2020-09-25 05:29:40,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:29:40" (3/3) ... [2020-09-25 05:29:40,221 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_25x0-2.c [2020-09-25 05:29:40,237 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:29:40,247 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:29:40,271 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:29:40,305 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:29:40,305 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:29:40,305 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:29:40,306 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:29:40,306 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:29:40,306 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:29:40,306 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:29:40,306 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:29:40,332 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 05:29:40,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 05:29:40,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:40,341 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 05:29:40,342 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:40,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:40,348 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-25 05:29:40,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:40,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433768096] [2020-09-25 05:29:40,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:40,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:40,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:40,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:40,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:29:40,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:40,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 05:29:40,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:40,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:40,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:29:40,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:40,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:29:40,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 05:29:40,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:40,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:40,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:40,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:40,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:40,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:29:40,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:40,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:40,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:40,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:40,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:40,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:40,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:40,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:40,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 05:29:40,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:40,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:29:40,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:40,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:29:40,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:40,944 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 05:29:40,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433768096] [2020-09-25 05:29:40,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:29:40,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:29:40,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334582018] [2020-09-25 05:29:40,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:29:40,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:40,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:29:40,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:29:40,981 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-25 05:29:41,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:41,082 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-25 05:29:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:29:41,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 05:29:41,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:41,099 INFO L225 Difference]: With dead ends: 39 [2020-09-25 05:29:41,100 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 05:29:41,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:29:41,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 05:29:41,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-25 05:29:41,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 05:29:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-25 05:29:41,166 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-25 05:29:41,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:41,167 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-25 05:29:41,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:29:41,167 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-25 05:29:41,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 05:29:41,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:41,170 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 05:29:41,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:29:41,171 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:41,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:41,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-25 05:29:41,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:41,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843225763] [2020-09-25 05:29:41,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:41,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:41,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:41,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:41,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 05:29:41,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:41,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 602 [2020-09-25 05:29:41,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:41,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:41,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:29:41,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:41,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:29:41,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 05:29:41,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:41,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:41,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:41,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:41,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:41,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:29:41,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:41,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:41,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:41,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:41,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:41,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 05:29:41,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:41,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:41,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:41,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:41,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:41,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 05:29:41,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:41,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:41,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:29:41,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:41,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:29:41,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:41,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:41,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:41,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:41,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:41,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:41,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:29:41,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:41,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:41,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:41,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:42,043 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 05:29:42,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843225763] [2020-09-25 05:29:42,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:42,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:29:42,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606605283] [2020-09-25 05:29:42,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:29:42,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:42,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:29:42,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:29:42,049 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 7 states. [2020-09-25 05:29:42,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:42,112 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-25 05:29:42,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:29:42,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-25 05:29:42,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:42,114 INFO L225 Difference]: With dead ends: 36 [2020-09-25 05:29:42,114 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 05:29:42,115 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 05:29:42,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 05:29:42,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 05:29:42,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 05:29:42,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 05:29:42,123 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-25 05:29:42,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:42,124 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 05:29:42,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:29:42,124 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 05:29:42,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 05:29:42,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:42,126 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 05:29:42,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:29:42,126 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:42,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:42,127 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-25 05:29:42,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:42,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239026369] [2020-09-25 05:29:42,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:42,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:42,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:42,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:42,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 05:29:42,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:42,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-09-25 05:29:42,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:42,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:29:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:42,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:42,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:42,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:42,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:42,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:42,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:42,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:29:42,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:42,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:42,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:42,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:42,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:42,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:42,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:42,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:42,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:42,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:42,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:42,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 05:29:42,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:42,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:29:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:29:42,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:42,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:42,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:42,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:42,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:42,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:42,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 05:29:42,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:42,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:42,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:42,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:43,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:43,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:43,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:43,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:29:43,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:43,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:43,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:43,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:29:43,046 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 05:29:43,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239026369] [2020-09-25 05:29:43,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:43,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:29:43,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056232219] [2020-09-25 05:29:43,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:29:43,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:43,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:29:43,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:29:43,052 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2020-09-25 05:29:43,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:43,153 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-09-25 05:29:43,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:29:43,154 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-25 05:29:43,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:43,156 INFO L225 Difference]: With dead ends: 41 [2020-09-25 05:29:43,156 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 05:29:43,157 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 05:29:43,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 05:29:43,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-25 05:29:43,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 05:29:43,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-25 05:29:43,171 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-09-25 05:29:43,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:43,171 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-25 05:29:43,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:29:43,171 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-25 05:29:43,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 05:29:43,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:43,174 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 05:29:43,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:29:43,174 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:43,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:43,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-09-25 05:29:43,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:43,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346836211] [2020-09-25 05:29:43,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:43,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:43,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:44,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:44,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 05:29:44,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:44,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 847 [2020-09-25 05:29:44,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:44,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:44,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:29:44,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:29:44,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:44,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:44,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:44,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:44,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:44,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:44,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:29:44,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:44,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:44,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:44,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:44,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:44,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:44,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:44,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:44,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:44,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:44,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 05:29:44,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:44,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:29:44,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:44,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 05:29:44,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:44,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:44,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:44,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:44,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:44,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:44,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 05:29:44,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:44,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:44,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:44,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:44,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:44,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:44,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:44,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:44,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:44,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:44,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 05:29:44,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:44,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:44,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:44,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:44,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:44,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:44,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:44,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:44,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:44,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:44,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:44,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:29:44,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:44,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:44,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:44,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:44,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:44,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:44,542 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 05:29:44,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346836211] [2020-09-25 05:29:44,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:44,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:29:44,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835285881] [2020-09-25 05:29:44,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:29:44,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:44,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:29:44,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:29:44,546 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states. [2020-09-25 05:29:44,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:44,636 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-25 05:29:44,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:29:44,636 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 05:29:44,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:44,638 INFO L225 Difference]: With dead ends: 46 [2020-09-25 05:29:44,638 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 05:29:44,639 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 05:29:44,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 05:29:44,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 05:29:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 05:29:44,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-25 05:29:44,647 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-09-25 05:29:44,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:44,647 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-25 05:29:44,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:29:44,648 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-25 05:29:44,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 05:29:44,649 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:44,649 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 05:29:44,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:29:44,650 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:44,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:44,650 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-09-25 05:29:44,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:44,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603786050] [2020-09-25 05:29:44,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:44,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:44,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:46,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:46,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 05:29:46,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:46,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1958 [2020-09-25 05:29:46,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:46,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:46,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:29:46,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:46,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:29:46,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:46,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:46,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:46,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:46,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:46,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:46,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:29:46,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:46,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:46,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:29:46,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:46,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:46,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:46,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:29:46,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:46,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-25 05:29:46,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:46,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:46,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:29:46,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:46,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 05:29:46,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:46,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:46,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:47,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:47,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:47,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:47,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 05:29:47,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:47,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:47,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:29:47,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:47,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:29:47,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:47,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:47,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:47,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:47,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:47,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:47,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 05:29:47,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:47,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:47,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:47,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:47,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:47,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:29:47,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:47,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:47,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:47,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:47,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:47,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 05:29:47,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:47,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:47,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:47,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:47,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:47,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:47,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:47,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:47,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:47,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:47,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:29:47,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:47,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:47,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:47,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:47,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:29:47,486 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 05:29:47,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603786050] [2020-09-25 05:29:47,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:47,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 05:29:47,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69383095] [2020-09-25 05:29:47,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:29:47,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:47,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:29:47,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:29:47,488 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 10 states. [2020-09-25 05:29:47,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:47,606 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 05:29:47,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 05:29:47,607 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-09-25 05:29:47,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:47,609 INFO L225 Difference]: With dead ends: 51 [2020-09-25 05:29:47,609 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 05:29:47,610 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 05:29:47,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 05:29:47,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 05:29:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 05:29:47,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-25 05:29:47,618 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-09-25 05:29:47,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:47,619 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-25 05:29:47,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:29:47,619 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-25 05:29:47,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 05:29:47,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:47,621 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 05:29:47,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:29:47,621 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:47,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:47,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-09-25 05:29:47,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:47,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946843854] [2020-09-25 05:29:47,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:47,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:47,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:51,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:51,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 05:29:51,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:51,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3937 [2020-09-25 05:29:51,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:51,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 05:29:51,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:51,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 05:29:51,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:51,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:51,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:51,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:51,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:51,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:51,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:29:51,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:51,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:51,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:51,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:51,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:51,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:51,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:51,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:29:51,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:51,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 05:29:51,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:51,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:51,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 05:29:51,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:51,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 05:29:51,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:51,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:51,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:52,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:52,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:29:52,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:52,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 05:29:52,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:52,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:29:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:29:52,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:29:52,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:52,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:52,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:52,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:52,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:52,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 05:29:52,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:52,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:52,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:29:52,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:52,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:29:52,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:29:52,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:52,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:52,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:52,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:52,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:52,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 05:29:52,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:52,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:52,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:52,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:52,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:52,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:52,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:52,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:52,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:52,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:52,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:52,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 05:29:52,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:52,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:52,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:52,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:52,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:52,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:52,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:52,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:52,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:29:52,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:52,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:52,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:52,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:52,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:52,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:52,640 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 05:29:52,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946843854] [2020-09-25 05:29:52,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:52,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:29:52,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086694307] [2020-09-25 05:29:52,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:29:52,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:52,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:29:52,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:29:52,642 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 11 states. [2020-09-25 05:29:52,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:52,764 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-09-25 05:29:52,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:29:52,764 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-25 05:29:52,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:52,766 INFO L225 Difference]: With dead ends: 56 [2020-09-25 05:29:52,766 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 05:29:52,767 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 05:29:52,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 05:29:52,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 05:29:52,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 05:29:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 05:29:52,774 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-09-25 05:29:52,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:52,774 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 05:29:52,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:29:52,775 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 05:29:52,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 05:29:52,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:52,776 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 05:29:52,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:29:52,777 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:52,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:52,777 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-09-25 05:29:52,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:52,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891927114] [2020-09-25 05:29:52,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:52,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:53,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:56,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:56,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-25 05:29:56,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:29:56,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4141 [2020-09-25 05:29:56,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:56,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 05:29:56,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:29:56,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 05:29:56,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:56,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:29:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:56,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:56,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:56,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:29:56,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:56,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:29:56,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:56,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:56,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:29:56,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:56,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:29:56,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:56,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:29:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:56,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:57,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:57,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:29:57,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:57,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-09-25 05:29:57,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:57,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:57,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 05:29:57,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:29:57,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 05:29:57,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:57,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:57,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:57,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:57,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:29:57,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:57,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-09-25 05:29:57,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:57,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:57,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:29:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:29:57,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:57,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:57,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:57,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:57,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:29:57,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:57,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 05:29:57,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:57,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:57,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:29:57,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:57,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:29:57,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:58,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:58,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:58,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:58,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:29:58,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:58,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 05:29:58,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:58,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:29:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:29:58,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:58,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:58,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:58,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:58,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:29:58,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:58,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 05:29:58,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:58,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:29:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:58,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:29:58,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:58,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:58,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:58,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:58,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:29:58,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:58,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 05:29:58,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:58,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:29:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:29:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:58,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:29:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:58,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:58,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:29:58,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:29:58,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:29:58,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:29:58,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:29:58,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:29:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:29:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:29:58,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:29:58,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:29:58,431 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 05:29:58,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891927114] [2020-09-25 05:29:58,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:29:58,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 05:29:58,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086358283] [2020-09-25 05:29:58,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 05:29:58,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:29:58,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 05:29:58,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:29:58,436 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 12 states. [2020-09-25 05:29:58,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:29:58,576 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-25 05:29:58,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:29:58,577 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-25 05:29:58,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:29:58,578 INFO L225 Difference]: With dead ends: 61 [2020-09-25 05:29:58,579 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 05:29:58,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-25 05:29:58,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 05:29:58,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 05:29:58,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 05:29:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-09-25 05:29:58,589 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-09-25 05:29:58,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:29:58,589 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-09-25 05:29:58,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 05:29:58,590 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-09-25 05:29:58,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 05:29:58,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:29:58,591 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 05:29:58,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:29:58,592 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:29:58,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:29:58,592 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-09-25 05:29:58,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:29:58,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322481873] [2020-09-25 05:29:58,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:29:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:29:58,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:29:58,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:03,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:03,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:30:03,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:30:03,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:30:03,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:03,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:03,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 05:30:03,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:30:03,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:30:03,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:03,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:03,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:03,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:03,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:03,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:03,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:30:03,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:03,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:03,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:03,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:03,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:03,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:03,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:30:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:03,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:04,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:04,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 05:30:04,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:04,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-09-25 05:30:04,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:04,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 05:30:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:30:04,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 05:30:04,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:04,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:04,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:04,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:04,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:30:04,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:04,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-09-25 05:30:04,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:04,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:30:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:30:04,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:04,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:04,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:04,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:04,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:30:04,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:04,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 05:30:04,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:04,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:04,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:30:04,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:04,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:30:04,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:04,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:04,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:05,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:05,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:30:05,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:05,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 05:30:05,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:05,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:05,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:30:05,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:05,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:30:05,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:05,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:05,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:05,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:05,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:30:05,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:05,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 05:30:05,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:05,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:05,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:30:05,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:05,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:30:05,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:05,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:05,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:05,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:05,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:30:05,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:05,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 05:30:05,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:05,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:30:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:30:05,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:05,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:05,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:05,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:05,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:30:05,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:05,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 05:30:05,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:05,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:05,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:30:05,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:05,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:30:05,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:05,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:05,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:05,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:05,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:30:05,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:05,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:30:05,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:05,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:30:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:30:05,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:05,557 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 27 proven. 134 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-25 05:30:05,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322481873] [2020-09-25 05:30:05,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:30:05,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 05:30:05,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134473543] [2020-09-25 05:30:05,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 05:30:05,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:05,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 05:30:05,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:30:05,560 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 13 states. [2020-09-25 05:30:05,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:05,787 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-09-25 05:30:05,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:30:05,788 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-09-25 05:30:05,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:05,790 INFO L225 Difference]: With dead ends: 66 [2020-09-25 05:30:05,790 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 05:30:05,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-25 05:30:05,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 05:30:05,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 05:30:05,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 05:30:05,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 05:30:05,827 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-09-25 05:30:05,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:05,829 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 05:30:05,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 05:30:05,829 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 05:30:05,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 05:30:05,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:05,834 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 05:30:05,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:30:05,835 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:05,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:05,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-09-25 05:30:05,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:05,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824122695] [2020-09-25 05:30:05,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:05,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:06,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:10,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:10,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 05:30:10,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:30:10,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:30:10,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:10,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 05:30:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:30:10,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 05:30:10,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:10,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:10,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:10,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:10,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:10,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:10,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:10,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:10,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:10,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:10,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:10,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:10,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:10,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:30:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:10,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:11,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:11,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 05:30:11,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:11,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-09-25 05:30:11,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:11,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:11,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 05:30:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:30:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 05:30:11,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:11,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:11,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:11,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:11,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 05:30:11,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:11,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-09-25 05:30:11,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:11,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 05:30:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 05:30:11,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:11,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:11,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:12,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:12,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:30:12,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:12,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-25 05:30:12,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:12,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:30:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:30:12,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:12,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:12,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:12,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:12,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:30:12,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:12,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-25 05:30:12,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:12,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:30:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:30:12,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:12,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:12,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:12,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:30:12,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:12,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 05:30:12,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:12,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:12,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:30:12,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:12,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:30:12,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:12,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:12,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:12,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:12,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:30:12,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:12,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 05:30:12,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:12,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:30:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:30:12,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:12,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:12,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:12,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:12,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:30:12,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:12,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 05:30:12,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:12,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:30:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:12,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:30:12,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:12,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:12,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:12,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:12,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:30:12,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:12,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 05:30:12,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:12,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:30:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:30:12,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:12,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:12,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:13,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:13,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:30:13,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:13,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:30:13,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:13,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:13,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:30:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:30:13,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 24 proven. 183 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-25 05:30:13,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824122695] [2020-09-25 05:30:13,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:30:13,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 05:30:13,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674305512] [2020-09-25 05:30:13,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 05:30:13,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:13,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 05:30:13,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-25 05:30:13,068 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 14 states. [2020-09-25 05:30:13,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:13,206 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 05:30:13,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:30:13,207 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 90 [2020-09-25 05:30:13,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:13,208 INFO L225 Difference]: With dead ends: 71 [2020-09-25 05:30:13,208 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 05:30:13,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-09-25 05:30:13,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 05:30:13,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 05:30:13,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 05:30:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-09-25 05:30:13,216 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-09-25 05:30:13,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:13,216 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-09-25 05:30:13,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 05:30:13,217 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-09-25 05:30:13,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 05:30:13,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:13,218 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 05:30:13,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:30:13,218 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:13,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:13,219 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-09-25 05:30:13,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:13,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773323438] [2020-09-25 05:30:13,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:13,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:13,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:18,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:18,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 05:30:18,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:30:18,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 05:30:18,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:18,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 05:30:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:30:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 05:30:18,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:18,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:18,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:18,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:18,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:18,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:18,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:18,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:18,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:18,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:18,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:30:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:18,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:18,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:18,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 05:30:18,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:18,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-09-25 05:30:18,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:18,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 05:30:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:30:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 05:30:18,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:18,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:19,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:19,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 05:30:19,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:19,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-09-25 05:30:19,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:19,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:19,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 05:30:19,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:19,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 05:30:19,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:19,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:19,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:19,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:19,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 05:30:19,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:19,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-09-25 05:30:19,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:19,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:19,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 05:30:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 05:30:19,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:19,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:19,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:20,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:20,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:30:20,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:20,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-09-25 05:30:20,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:20,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:20,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:30:20,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:20,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:30:20,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:20,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:20,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:20,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:30:20,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:20,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 05:30:20,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:20,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:20,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:30:20,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:20,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:30:20,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:20,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:20,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:20,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:20,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:30:20,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:20,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 05:30:20,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:20,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:20,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:30:20,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:20,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:30:20,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:20,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:20,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:20,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:20,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:30:20,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:20,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 05:30:20,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:20,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:20,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:30:20,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:20,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:30:20,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:20,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:20,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:20,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:20,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:30:20,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:20,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 05:30:20,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:20,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:20,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:30:20,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:20,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:30:20,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:20,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:20,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:20,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:20,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:30:20,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:20,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 05:30:20,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:20,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:30:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:30:20,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:20,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:20,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:20,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:20,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:30:20,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:20,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:30:20,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:20,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:21,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:30:21,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:21,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:30:21,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:21,084 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 33 proven. 225 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-09-25 05:30:21,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773323438] [2020-09-25 05:30:21,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:30:21,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 05:30:21,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305993014] [2020-09-25 05:30:21,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 05:30:21,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:21,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 05:30:21,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:30:21,086 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 15 states. [2020-09-25 05:30:21,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:21,262 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-09-25 05:30:21,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:30:21,263 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 99 [2020-09-25 05:30:21,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:21,264 INFO L225 Difference]: With dead ends: 76 [2020-09-25 05:30:21,265 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 05:30:21,266 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 05:30:21,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 05:30:21,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 05:30:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 05:30:21,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 05:30:21,286 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 99 [2020-09-25 05:30:21,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:21,287 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 05:30:21,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 05:30:21,287 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 05:30:21,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 05:30:21,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:21,290 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 05:30:21,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 05:30:21,290 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:21,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:21,291 INFO L82 PathProgramCache]: Analyzing trace with hash -276966773, now seen corresponding path program 10 times [2020-09-25 05:30:21,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:21,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039426902] [2020-09-25 05:30:21,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:21,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:21,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:26,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:26,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 05:30:26,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:30:26,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:30:26,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:26,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 05:30:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:30:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 05:30:26,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:26,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:30:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:26,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:26,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:26,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:30:26,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:26,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:30:26,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:26,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:30:26,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:26,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:30:26,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:26,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:30:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:26,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:26,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:26,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 05:30:26,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:26,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 647 [2020-09-25 05:30:26,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:26,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:26,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 05:30:26,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:30:26,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 05:30:26,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:27,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:27,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:27,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:27,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 05:30:27,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:27,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-09-25 05:30:27,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:27,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:27,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 05:30:27,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:27,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 05:30:27,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:27,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:27,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:28,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:28,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 05:30:28,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:28,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-09-25 05:30:28,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:28,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 05:30:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 05:30:28,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:28,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:28,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:28,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:28,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 05:30:28,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:28,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-09-25 05:30:28,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:28,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:28,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 05:30:28,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:28,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 05:30:28,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:28,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:28,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:29,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:29,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:30:29,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-09-25 05:30:29,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:29,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:30:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:30:29,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:30:29,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:29,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:29,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:29,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:30:29,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:29,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-09-25 05:30:29,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:29,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:30:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:30:29,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:29,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:29,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:29,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:29,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:30:29,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:29,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 05:30:29,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:29,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:29,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:30:29,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:29,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:30:29,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:29,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:29,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:29,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:29,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:30:29,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:29,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 05:30:29,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:29,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:29,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:30:29,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:29,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:30:29,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:29,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:29,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:29,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:30,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:30:30,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:30,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 05:30:30,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:30,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:30:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:30:30,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:30,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:30,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:30,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:30,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 05:30:30,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:30,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 05:30:30,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:30,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:30,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:30:30,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:30,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:30:30,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:30:30,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:30:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:30,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:30,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:30:30,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:30:30,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:30:30,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:30:30,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:30:30,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:30:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:30:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:30:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:30:30,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:30:30,154 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 21 proven. 293 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-09-25 05:30:30,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039426902] [2020-09-25 05:30:30,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:30:30,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 05:30:30,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105443379] [2020-09-25 05:30:30,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 05:30:30,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:30:30,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 05:30:30,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:30:30,157 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 16 states. [2020-09-25 05:30:30,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:30:30,384 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-09-25 05:30:30,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:30:30,385 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-09-25 05:30:30,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:30:30,386 INFO L225 Difference]: With dead ends: 81 [2020-09-25 05:30:30,386 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 05:30:30,387 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 05:30:30,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 05:30:30,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-09-25 05:30:30,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 05:30:30,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-09-25 05:30:30,394 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 108 [2020-09-25 05:30:30,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:30:30,394 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-09-25 05:30:30,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 05:30:30,394 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-09-25 05:30:30,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 05:30:30,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:30,396 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 05:30:30,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 05:30:30,396 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:30,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:30,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1749540651, now seen corresponding path program 11 times [2020-09-25 05:30:30,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:30,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410278247] [2020-09-25 05:30:30,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:30,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:30,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking...